Development of Nu 2.0L CVVL Engine

Paper #:
  • 2014-01-1635

Published:
  • 2014-04-01
DOI:
  • 10.4271/2014-01-1635
Citation:
Ha, K., "Development of Nu 2.0L CVVL Engine," SAE Technical Paper 2014-01-1635, 2014, doi:10.4271/2014-01-1635.
Author(s):
Affiliated:
Pages:
6
Abstract:
Hyundai Motor Group launched a Continuously Variable Valve Lift (CVVL) engine in 2012. The engine is equipped with HMG's unique CVVL mechanism and is characterized by low fuel consumption, high performance and its responsiveness. The CVVL mechanism is based on a six-linkage mechanism and has advantages of compactness and durability. The engine is a 4 cylinder In-Line, 2.0L gasoline engine and is designed for a mid-sized passenger car. The engine increases fuel efficiency by 7.7% and the peak engine power by 4.2%.One of the most challenging issues in producing a CVVL engine is the valve lift deviations throughout the engine cylinders. The valve cap shim and set screw were designed to adjust the valve lift deviations. Cap shim thickness is chosen by measuring the valve top height, and shoe lift of the cam carrier assembly. The set screw is an auxiliary device to adjust the valve lift deviation. Present study developed a diagnostic system for the valve lift deviations that is applicable to the assembly line of the CVVL engine plant. A test setup was applied to measure the valve lifts directly. This diagnostic system was located just after the assembly station of the valvetrain components so it can monitor the valve lift variations in real time and give fast feedback of the assembly system.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Technical Paper / Journal Article
2011-04-12
Article
2016-09-06
Article
2016-08-24
Video
2017-03-26
Technical Paper / Journal Article
2011-04-12
Training / Education
2010-03-15
Training / Education
2017-10-05