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Viewing 1 to 30 of 84740
2017-07-10
Technical Paper
2017-28-1927
Saurav roy, Jyotirmoy Barman, Rizwan Khan
The urea NOx selective catalytic reduction (SCR) is an effective technique for the reduction of NOx emitted from diesel engines. Urea spray quality has significant effect on NOx conversion efficiency. Air less injection is one of effective, less complex way of injecting urea spray into the Exhaust stream. Further with air less injection it become more challenging in an engine platform of ~3 to 4L where Exhaust mass flow and temperature are relatively less. The droplet diameter and velocity distribution of De-Nox system has taken as input along with Engine raw emission data for a numerical model. The atomization and evaporation of airless urea injection systems were modeled using computational fluid dynamics. The numerical model was validated by the experimental results.
2017-07-10
Technical Paper
2017-28-1934
Anil Thakur, Md Tauseef Alam, Venkatesh Kumar PS, P D Kulkarni, Senthur Pandian
Current high rating thermal loaded engines must have super-efficient lubrication system to provide clean oil at appropriate pressure and appropriate lube oil temperature to every part of the engine at all engine RPM speeds and loads. So oil pump not only have to satisfy above parameters but also it should be durable till engine life. Gerotor pumps are internal rotary positive-displacement pumps in which the outer rotor has one tooth more than the inner rotor. The gear profiles have a cycloidal shape. Both are meshed in conjugate to each other. Gerotor takes up engine power through crankshaft and deliver to various engine consumers at required pressure and required time. Over the complete engine rpm speed and loads range, oil pump need to perform efficiently to provide proper functioning of the engine.
2017-07-10
Technical Paper
2017-28-1961
Shishir Sirohi, Saurabh yadav, Ashok B, V Ramesh Babu, C Kavitha, K Nantha gopal
The main objective of the study is to design and analyze casing and supports of a transmission system for an electric vehicle. The system comprises of motors as the power source, constant mesh gear box coupled with limited slip differential as the power transmitting source. The space occupied by the transmission system is a foremost constraint in designing the system. The wear and tear in the system are caused by the gear meshing process and transmission error which lead to failure of the transmission system. This internal excitation also produces a dynamic mesh force, which is transmitted to the casing and mounts through shafts and bearings. In order to overcome such issues in a transmission system, a gear box casing, differential mounts and motor mounts have been designed by the use of CAD-modelling software “SOLIDWORKS”. The designs were imported to FEA software “ANSYS” for carrying out static structural analysis.
2017-07-10
Technical Paper
2017-28-1957
Anant Parashar, Thangaraja Jeyaseelan PhD
Oxygenated fuels like biodiesel and ethanol possess prominent characteristics as an alternative fuel for diesel engines. However, these fuels are corrosive in nature and hygroscopic. This might results in material incompatibility with the fuel supply system of a automobile. A fuel supply system comprises of a fuel reservoir, fuel pump, fuel strainer, fuel lines and fuel filter. The filter is responsible for removing contaminants from the fuel and prevents them from entering into the combustion chamber. A fuel filter consists of an outer metallic casing that holds the filter membrane. Filter membrane is the filtering element that traps the contaminants. The operational hours of the filter membrane depend on the quality of fuel employed. The conventional filter is designed for fossil diesel operation and hence the filter life might degrade earlier in the case of oxygenated fuels like biodiesel or ethanol.
2017-07-10
Technical Paper
2017-28-1967
Senthil Ram N D, Thulasirajan Ganesan, 1Lt Praveen Chakrapani Rao
Global Automotive Industry is mandated with the task of emission reduction and mileage improvements. One of the key areas being looked at from mileage standpoint is light weighting. While Aluminum body is replacing Steel is many vehicular applications, in Starter Motor Aluminum is the key component. Therefore, any attempt at light weighting must consider Aluminum. A Starter motor fits directly on to the engine. Aluminum being the housing material provides structural stability. It also performs the role of heat dissipation being a good thermal conductor and source of electrical ground path. Aluminum constitutes 20 – 25% of Starter motor weight. Any significant weight reduction cannot be achieved unless we look at the components made of Aluminum, namely die cast Housing and End plate. The alternatives considered in this study include engineered plastics, magnesium alloy and composites.
2017-07-10
Technical Paper
2017-28-1969
Senthil Ram N D, Thulasirajan Ganesan, 1Lt Praveen Chakrapani Rao
Magnesium alloy current being used for automotive sector and are being significantly used for manufacturing engine block as offering higher power to weight ratio to the vehicle. In this context, the magnesium alloy has been used in the replacement of aluminium alloy for the starter housing which in turn increase the power to weight ratio of the motor. Considering the operation condition of starter motor in the engine of the vehicles, the starter motor are being exposed to the harsh environment, where its system are being tested for Noise, Vibration and Harshness. In this paper, the magnesium alloy housing is used to study the vibration and noise developed in the starter motor and the same is compared with the noise and vibration of the motor when it being used with Aluminium alloy Housing. First, the vibration study is carried out for the housing part alone to capture the resonant frequency of the both housing alloy say, Aluminium and Magnesium.
2017-07-10
Technical Paper
2017-28-1971
Thirumalai kannan Kandaswamy
This aim of this paper is to investigate the tribochemical property of chemically modified jojoba seed oil with the additive of graphene nanoparticle as a blend in mineral oil for the use of engine oil lubricant. Jojoba oil is synthesized using epoxidation, hydroxylation, and transesterification process. Oil samples are formulated with various blends of chemically modified jojoba oil to the base engine oil with the 0.05 to 0.75 % wt. of carbon based nanoparticle particles. Tribological tests were conducted on a four-ball tribometer under extreme pressure and anti-wear conditions for formulated blend and Pin on disc tribometer for wear and friction measurement. Results show that under extreme load conditions the blends of 30% jojoba oil show lesser wear scar diameter when compared with the other blends. And also the addition of graphene nanoparticles could enhance the lubrication properties of their blends.
2017-07-10
Technical Paper
2017-28-1972
ANIL P M, Cd Naiju
Direct Metal Deposition (DMD) is a rapid prototyping technique used to fabricate and repair metallic prototypes. It can be used in the production of complex geometries and unique parts. In functional automotive applications wear characteristics hold key importance. In the present study, an analysis on the influence of various parameters (coating thickness, load and temperature) on the wear characteristics of Direct Metal Deposited (DMD) Inconel 625 coating has been carried out using a Design of Experiments (DOE). ANOVA calculations were performed to find out which of these parameters showed significant influence on the wear properties. It was found that load was the most significant parameter influencing the wear characteristics .Similarly load was found to be most influencing parameter for co efficient of friction. The trend was found to follow when verified at 30 second, 3 minutes, 60 minutes and 120 minutes.
2017-07-10
Technical Paper
2017-28-1942
Rajvardhan Nalawade
The exhaust system of a vehicle is an integral part as it is responsible for reducing the noise of the exhaust gases and controlling the emissions as well. Mufflers are particularly the sub part of an exhaust system that reduce the sound level. Their geometry and size are meticulously calculated and decided so as to increase destructive interference of sound waves and their absorption by sound absorbent material packed around it. There are five types of basic mufflers which will be compared for their transmission losses. For this analysis of transmission losses, a software called Ricardo Wave Build has been used. Transmission loss is basically, the difference between the energy of the incoming charge and the energy of the outgoing charge of gases. So, more is the transmission loss, more efficient and productive is the muffler. Based upon the transmission loss characteristics, the mufflers are paired with their corresponding applications.
2017-07-10
Technical Paper
2017-28-1940
Ram kishore Sankaralingam, Venugopal Thangavel, Saleel Ismail
The future of an internal combustion engine depends on how intelligently it controls the emission and monitors the efficiency in accordance with its working conditions. To gratify the emerging emission norms, an engine has to switch over to different modes of operation from its conventional spark ignition or compression ignition mode. One among the efficient modes which is being widely researched for its low NOx capability is called Reactivity Controlled Compression Ignition (RCCI). RCCI uses a port injected fuel similar to SI engines and gets it compression ignited similar to CI engines. Generally, two fuels of different reactivities will be chosen for this technique. RCCI can be achieved either by injecting one fuel through port and one fuel through in cylinder or both the fuels through port. In this research work, a simple and cost effective electronic fuel injection (EFI) technique was established to handle both the single and dual port injection systems.
2017-07-10
Technical Paper
2017-28-1943
Anil Kumar Jaswal, Rajasekhar MV, Pradeep C
This paper details about the approach and challenges in converting a conventional vehicle platform designed for diesel/gasoline powertrain into an electrified one. It is not always feasible to accommodate electric powertrain in conventional platforms based on the target requirements. Electrification of conventional vehicles will cut back dependence on fossil fuels, emission of greenhouse gases and emission of pollutants. Fossil fuel are going to be depleted in few decades. Moreover, the emission from traditional vehicle has raised a huge threat to the atmosphere. Auto OEM's have recognized that electric drive vehicles are critical to the future of the industry. However, some difficulties exist to more noteworthy selection: the view of cost, EV range, access to charging, potential impacts, and absence of open mindfulness about the accessibility and common sense of these vehicles.
2017-07-10
Technical Paper
2017-28-1941
Anil Kumar Jaswal, Rajasekhar MV, Pradeep C
This paper details the methodology used to show the importance of Low rolling resistance tires in Electric Vehicles. Fuel efficiency and range is paramount with most of the electric vehicle buyers. Although many people are now becoming aware of low rolling resistance tires but its development started way back in 1990’s. It is always challenging to achieve low rolling resistance in smaller tires of size 12 inch or 13 inch along meeting the other critical vehicle parameters such as ride and handling, NVH, durability and many more. The reduction in rolling resistance can also affect the traction properties of tires. In case of very low rolling resistance tires the traction will be very less but it can badly affect the other vehicle parameters. Selection of tires further depend upon the RWUP (Real World Usage Profile). It means the vehicle is targeted for which region and what is the condition of roads there.
2017-07-10
Technical Paper
2017-28-1939
Maruti Patil, Penchaliah Ramkumar, Shankar Krishnapillai
Gearbox design is a very complicated and highly specialized task. Gearbox plays an important role in the system of power transmission. It finds its application in various machines, such as stationary engines, bicycles, cars, windmills, etc. Minimum weight and high-efficiency gearboxes with the good service life is the prime necessity of today’s high-performance power transmission systems such as automotive and aerospace. To achieve these objectives, optimum gearbox parameters should be calculated. Hence, this problem to optimize the gearboxes is subjected to a considerable amount of interest. To accomplish these objectives, in this paper, two generalized objective functions for two stage spur-gearbox are formulated, first one is for minimum volume and the second one is to maximize the power transmitted by the gearbox considering regular mechanical as well as the tribological constraints (Scuffing and Wear).
2017-07-10
Technical Paper
2017-28-1986
Dinesh PAULRAJ, S.S.M Abdul Majeed, R Rajendran
Stir casting method is one of the simplest low cost and high production rate technology for producing metal matrix composites. In this study the TiO2 Nano particles are combined with A356 to form a newer Metal Matrix Composite (MMC) which is to be utilised in the aerospace, marine, military and Automotive Applications. 0.5TiO2A, 1TiO2A, 1.5TiO2A and 2TiO2A wt% of TiO2 were reinforced with A356 under 10 minutes holding time and 400 rpm stirring speed. Mechanical tests such as tensile, impact and hardness test were conducted on the new Metal Matrix Composite material specimens. Using optical microscope and SEM the microstructure, surface morphology and composition of the manufactured specimens were studied. EDS analysis is done to study the atomic elemental composition present in the MMC.The XRD analysis displays the variation in XRD Patterns of the Nano composites containing various % weight of Nano TiO2.
2017-07-10
Technical Paper
2017-28-1950
J Suresh Kumar, Sakthivel B, Srinivasan B, Ramalingam Sivanantham
The world automotive industry is facing the problem of reduction of emissions coming out of the engine. Also, the stringent emission norms imposed by the regulating body for transition from BS IV to BS VI urge the auto makers to concentrate on new technologies to reduce the emissions. One of the major emissions coming out of the diesel engine is oxides of nitrogen (NOx) which is detrimental to human health. This NOx emission is formed when the combustion temperature of engine exceeds 1500 ◦C. There are several methods available to reduce these NOx emissions formed in-cylinder. Exhaust Gas Recirculation (EGR) system is one such system, which reduces the NOx emission formed inside the engine by supplying a portion of the exhaust gases. By re-circulating exhaust gases, the air admitted to the engine is diluted and further, due to the high latent heat of vaporization of water, water vapor tends to absorb more amount of heat that is generated during combustion.
2017-07-10
Technical Paper
2017-28-1951
K Nantha gopal, Ashok B, Rishabh Bahuguna, Tanmay Prasad
Thermal management is one of the most challenging and innovative aspects of the automotive industry in the modern world. The efficiency of the vehicle cooling framework unequivocally relies upon the air stream through the radiator core. Significant developments in the automotive thermal management are being embraced in the field of radiator material and coolant.The radiator shouldn't be exclusively credited for the vehicle's reliable engine cooling system. There are other auto parts that play an essential role in keeping engine temperature at a manageable level. The fan shroud is an important component of the cooling fan. While thefan is responsible for drawing in low-temperature air, the fan shroud's job is to ensure this air gets to the radiator core. By assisting airflow in the engine compartment the fan shroud helps in expelling excess heat from the engine. The fan shroud also prevents the recirculation of heated air through the cooling fan.
2017-07-10
Technical Paper
2017-28-1954
Premkumarr Santhanamm, K. Sreejith, Avinash Anandan
A local and global environmental concern regarding automotive emissions has led to optimize the design and development of Power train systems for IC engines. Blow-by and Engine oil consumption is an important source of hydrocarbon and particulate emissions in modern IC engines. Great efforts have been made by automotive manufacturers to minimize the impact of oil consumption and blow-by on incylinder engine emissions. This paper describes a case study of how simulation played a supportive role in improving piston ringpak assembly. The engine taken up for study is a six cylinder, turbocharged, water cooled diesel engine with a peak firing pressure of 140 bar and developing a power output of 227 KW at 1500 rpm. This paper reveals the influence of stepped land, top groove angle, ring face profile, twist features with regard to tweaking of Blow-by & LOC. Relevant design inputs of engine parameters were provided by the customer to firm up the boundary conditions.
2017-07-10
Technical Paper
2017-28-1968
M Ananthasaravanan, R. Rajendran, N Ravikumar, K Venkateswaran
Sheet metal forming plays a major role in automobile and automobile spare parts manufacturing industries. The objective is to determine the forming limit diagram for the bimetal sheet so as to predict the formability/ductility. Only few researchers have worked in the forming limit of bimetal sheet. In this work, bimetal sheet with two different combinations of copper with steel and aluminium with steel were used. Experimental and numerical analysis were carried out to find the forming limit of the material. Erichsen cupping test were performed as per ASTM E2218 standards to evaluate the ability of metallic sheets and strips to undergo plastic deformation in stretch forming. Numerical simulation using ANSYS and LS DYNA were carried out to find the forming limit. Preliminary tests like tensile test, micro hardness and impact test were carried out to find the mechanical properties of the bimetal material.
2017-07-10
Technical Paper
2017-28-1970
SREERAJ KODOOR
White etching crack (WEC) failure is distinct from classical rolling contact fatigue failure, frequently observed in bearings of electric power driven accessories of automobiles and wind turbine gearbox bearings etc. Release of atomic hydrogen from tribochemical reaction such as the lubricant failure and water contamination due to sever operating condition is believed to be one of accelerating factor of WECs & premature bearing failure. The cause of White etching area (WEA) formation associated WEC appearing 1-20% of L10 bearings life and premature failure is still under investigation. The method of creating WEC in laboratory condition is reported as a tedious and longer process for the root cause analysis. The paper would be a study of formation of WEA due to dynamic loading on Pin on disc tribometer. This paper, number of experiment was carried out using modified Pin on disc having dynamic load facility.
2017-07-10
Technical Paper
2017-28-1988
G Ramanjaneyulu, R Rajendran
Polyoxymethylene (POM) is a widely used engineering thermoplastic material, which exhibits good fatigue resistance, creep resistance and high impact strength. It has low friction coefficient due to the flexibility of the linear molecular chains. It has good wear-resistant properties because of its high crystallinity and high bond energy. Molybdenum disulfide (MoS2) is particularly important for solid lubrication or as an additive for lubricating oils and greases. Graphite is used in industrial applications for their self-lubricating and dry lubricating properties. POM/Graphite and POM/MoS2 composites were prepared with varying proportions using twin screw extruder. The samples were prepared by injection moulding machine. Impact test and wear tests were conducted on the samples. The impact strength of the samples was measured by impact testing machine. The impact results show that significant improvement in the impact strength for graphite and MoS2 fillers.
2017-07-10
Technical Paper
2017-28-1958
Jyothivel Giridharan, Gokul Kumar
Bio-fuels potentially represent a more environmentally friendly alternative to fossil fuels as they produce fewer greenhouse gas emissions when burned. Ethanol is one such bio-fuel alternative to the conventional fossil fuels. Towards the initiative of sustainable transportation using alternative fuels, it is attempted to develop an ethanol powered engine for commercial vehicles and this paper attempts to explain the 1D thermodynamic simulation carried out for predicting the engine performance and combustion characteristics, as a part of the engine development program. Engine simulation is becoming an increasingly important engineering tool for reducing the development cost and time and also helps in carrying out various DOE iterations which are rather difficult to be conducted experimentally in any internal combustion engine development program. AVL Boost software is used for modelling and simulation.
2017-07-10
Technical Paper
2017-28-1963
Pavan Bharadwaja Bhaskar, S Srihari
In recent times control of emissions has been the major issue resulting strict emission norms. Oxides of nitrogen (NOx) reduction is a major concern over the years and diesel engine has big hand when compared to gasoline. Several promising techniques have been developed, homogeneous charge compression ignition (HCCI) is one of the effective ways to trim down the NOx emissions by keeping thermal efficiency identical to diesel engine. However, this concept lags in controlling CO and HC emissions. Methanol fuel blends are chosen as it significantly improves the combustion quality. Oxygen content in methanol drags attention as it can compensate HC and CO emissions caused by HCCI mode of combustion. In this work conventional diesel engine is converted into HCCI engine by mounting diesel vaporizer at inlet manifold to attain homogenous mixture. An experimental investigations have been carried out to analyse performance and emission characteristics using different methanol blends.
2017-07-10
Technical Paper
2017-28-1975
ANIL P M, K Nantha gopal, Ashok B
The present study aims at investigating the friction and wear characteristics by blending zinc diakyldithio phosphates(ZDDP)with pongamia oil methyl ester as lubricant under various loading conditions and temperatures. Coefficient of friction and wear scar depth were determined using pongamia biodieselblended with 0.3%, 0.6% and 1 % ZDDP by concentration through high frequency reciprocating wear testing machine for 2 hrs duration. The reciprocating wear tests were performed on an engine liner-piston ring contact for various loads of 40N, 60N and 80 N for 2 hrs duration at temperatures of 100C, 125C 150C with 10 Hz oscillation frequency as per ASTM G181, 11. The addition of ZDDP with pongamia bio-lubricant showed marginal reduction in friction coefficient and wear scar depth under all loads and temperatures. Coefficient of friction was found to be higher in the initial stages due to running-in for all testing conditions.
2017-07-10
Technical Paper
2017-28-1987
Vigneshwaran K, Palanivendhan Murugadoss, Gokul K. Gokul
The main objective is to Extraction of cellulose nanofibers using Mechanical ball milling Process and Chemical Treatment Methods. The Nanofibers are incorporated with Epoxy Matrix to make composite plates. Mechanical properties such as tensile strength, Flexural strength, and impact energy are evaluated. Mechanical Extraction method such as Ball Milling is carried out for 2 hours and 5hours. Using SEM image the ball milling powder are visualized to determine the diameter. In Chemical Treatment Methods three Different kinds of Treatment are performed namely sodium Hypochlorite, Sodium Hypochlorite, and Acetic acid. Using Handlay up method these fibers are incorporated into the epoxy matrix to fabricate composite plates. The ball milling process is carried out without any chemical Treatment process. Increases in milling process result in the chance of occurring Nano fibers. In my study Nano sized fiber is not obtained, only the 28 microns fibers are converted into 3-4 microns.
2017-07-10
Technical Paper
2017-28-1935
Praveen V V, P Baskara Sethupathi
According to FSAE 2017-18 Rule Book, ARTICLE 3, IC3.2 and IC3.3 state that the maximum sound level should not exceed 110 dBC at 7500 RPM and 103 dBC at Idle (for the KTM 390 engine, which has 60 mm stroke length). Being a race car the space and weight constrains are there for the muffler and but the major concern is to reduce the backpressure of the muffler, so that maximum torque can be achieved from the engine. So the active muffler which works as a normal reflective muffler till the 7500 RPM range, after which an electronic controlled throttle mechanism is used to reduce the backpressure (since after 7500 RPM the noise level doesn't matter in FSAE) by using tach signal from the engine to control the throttle. The electronic throttle will be controlled using an ardino board to change the throttle opening angle and control the backpressure, with respect to the Engine RPM. This ensures that Noise level rules are met without compromising on the performance.
2017-07-10
Technical Paper
2017-28-1978
Stanley M Jerome, Senthilkumar Sundararaj
The process of building the engine and its subsequent systems involves usage of metals & its compounds. The current technique is in which the fuel is burned in a combustion chamber wherein the actual combustion progression and its subsequent gases are surrounded by metallic compounds. The part of the heat energy generated in the system is forced to be removed by means of cooling to protect the structural integrity of the engine; nearly 30% of the energy is lost due to cooling. However limitation in structural behaviour of metallic materials and limited resource for the production of metals and alloys with superior high temperature structural causes the search for new alternate materials like ceramics, organic synthetic plastic, etc. Thermal Barrier Coating is an attractive and promising method in providing thermal insulation for the engine components due to its good thermo-mechanical properties.
2017-07-10
Technical Paper
2017-28-1965
Selvam Ganesan, Surya Prakash Vaidhyanathan PE, Prince Arockia Doss Sebastian PhD, Abdullah Zaheer Mohammed PE, Baskaran V
Lean approaches are being implemented in various manufacturing facilities across the globe. The application of lean approaches are extended to Body proto build shop to maximize the efficiency of the shop with lesser floor space and optimized equipment. Weld fixture, Weld equipment and assembly tools are the major tools required essentially for proto BIW assembly. This paper explains how the Weld equipment planning was carried out with lean approaches and implemented effectively in proto body assembly shop. The implemented lean concepts are compared with Italy and Japanese proto body build makers to validate the frugal planning of the facility for the said intent. The implemented facility is capable of producing more than a model at a time. Weld parameter selection for weld gun, gun movement to the fixture with minimized change over time, portable weld gun gantry are the lean approaches implemented.
2017-07-10
Technical Paper
2017-28-1959
Abhishek Taluja, Simson T. Wilson, Santosh Lalasure, K. rajakumar
The Ride Comfort has always been an important attribute of a vehicle that gets trade-off with handling characteristics of a vehicle. However, to cater the growing customer requirements for better ride comfort in a vehicle without compromising on other attributes, evaluating and achieving optimal ride comfort has become a significant process in the vehicle development. In the current engineering capability and virtual engineering simulations, creating an accurate and real time model to predict ride comfort of a vehicle is a challenging task. The qualitative evaluation of ride attributes has always been the proven conventional method to finalize the requirements of a vehicle. However, quantitative evaluation of vehicle ride characteristics benefits in terms of target setting during vehicle development process and in robust validation of the final intended product against its specifications.
2017-07-10
Technical Paper
2017-28-1966
Praveen Kumar, Nareen Kinthala, Sri Viknesh Mohan, Harshad Bornare
Rapid prototyping is a revolutionizing technology extensively used in automotive, aerospace, medical, jewelry industries etc. Rapid Prototyping is an additive / subtractive layer manufacturing process, used to quickly fabricate a scale model from CAD data in just a matter of hours. In Automotive trims, rapid prototyping technology is a boon. It is used: -To simulate the "tooled up/production part" in terms of assembly, defined function and fit & finish. -To evaluate & capture early feedback from top management review in term of aesthetic, design, etc. -For early prediction and plan of action towards improvement for craftsmanship. -To reduce design iterations, product lifecycle time and cost. In this paper, we will discuss on technical aspects of how prototype models have been effectively put to use in order to validate Packaging, Assembly & Accessibility, Mechanism, Proof of concept, Functionality and Craftsmanship.
2017-07-10
Technical Paper
2017-28-1926
Jos Frank, Sohin Doshi, Manchi Rao, Prasath Raghavendran
NVH plays key role in customer perception of vehicle quality. In today’s market scenario,NVH is one of the major deciding factors of vehicle acceptance like fuel efficiency. An NVH problem is identified and analyzed on a recently developed M2 category bus platform and suitable diagnosis is presented in this paper. Severe vibration is experienced on the bus floor predominantly towards rear part of bus. Vibration occurs prominently in 4th gear wide open throttle operating condition between 1300-1600 engine RPM. This phenomenon is also accompanied by an acoustic boom in the passengercabin during the afore mentioned RPM zone. This paper explores the possibility of reducing NVHlevels by working on the transfer path with minimum modification on power-train. The task was to identify the source of the vibration and the transfer path to the target locations. Baseline NVH measurements revealed the problematic rpm zone and related frequencies.
Viewing 1 to 30 of 84740