The development of automotive high speed direct injection (DI) diesel engines is reviewed, from their introduction in the mid-1980s, to the latest multi-valve engines announced recently. A comprehensive list of production high speed DI engines is contained in the text. Performance and emissions characteristics of prototype 4-valve per cylinder DI diesel engines, from 2.5 to 1.3 litres capacity, are described. Fuel injection equipment, exhaust gas recirculation (EGR) and regulated emissions achievements are also reviewed. The 4-valve per cylinder configuration provides significant benefits, in terms of low speed torque and emissions. The 1.3 litre inline 3-cylinder engine was the power unit for the Ford Ka 'Step 1' which was displayed at the 1996 Berlin Motor Show. This vehicle achieved 3.1 litres/100 km fuel economy, in a specially prepared lightweight, low drag Ka. It is concluded that this future technology will be a major contribution to light-duty DI diesels in meeting future emissions standards and for them to remain tne most efficient prime mover for passenger cars and light trucks.
Developments in high speed direct injection Diesel engines
Entwicklungen von direkteinspritzenden Pkw-Dieselmotoren
Aachener Kolloquium Fahrzeug- und Motorentechnik, 6 ; 2 ; 689-710
1997
22 Seiten, 12 Bilder, 6 Tabellen, 32 Quellen
Conference paper
English
Developments in high speed direct injection Diesel engines
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