The Progress of IDI Diesel Engine for Passenger Car

Paper #:
  • 930720

Published:
  • 1993-03-01
Citation:
Sato, H., Sato, Y., and Ishida, S., "The Progress of IDI Diesel Engine for Passenger Car," SAE Technical Paper 930720, 1993, https://doi.org/10.4271/930720.
Pages:
9
Abstract:
This paper describes the progress of IDI diesel engine for passenger car.There are two options of direct-injection(DI) and indirect-injection(IDI) type for diesel engines.IDI-engines have been mainly used for diesel passenger car for a long time. In recent years, in order to reduce CO2 and fuel consumption, DI engine for passenger car have been developed. Convential IDI engine have, generally speaking, 15 percent worse fuel economy while it has better potential of exhaust emissions, combustion noise and cabin heater performance than DI engines for passenger car.The possibility of fuel economy (CO2) improvement in IDI diesel engine has been persued in a single cylinder engine.It was found that high pumping rate of injection system gives excellent fuel economy at high engine speed because of shorter injection duration without increase of exhaust emissions, though it gives a slightly worse fuel economy and HC at low speed.From cylinder pressure analysises the better SFC level by use of high pumping rate is proved to be more rapid combustion.
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