Search Results

The task of “Around the world in 80 days on 1000 liters of fuel” was successfully accomplished on the 3rd of August 2000. Volkswagen has set up a formidable record with its Lupo 3L TDI, the world's first ever 3 liters car. In 80 days this car traveled 33333 kilometers across 5 continents using only 792.57 liters of fuel. 2.38 liters per 100 kilometers, equal to 98.9 miles/gallon, at an average speed of 85.6 km/h, what has never been done before. Beside other features of the car and the drive train, credit must be given to the 1.2 liter Diesel engine equipped with Unit Injectors. Further improvement of the fuel consumption and emissions might be reached with Diesel-like and S.I.-like Stratified Charge engines as discussed in this paper.

Controlled combustion in direct injection stratified charge engines can be achieved by the use of impinging jets for injection as well as for ignition, in association with a close-loop, electronic control system. Upon the description of the method of approach required for the design of a control strategy, illustrated by application to a conventional diesel engine, salient features of novel concepts for direct injection stratified charge engines are presented.

Direct injection into open chambers of Diesel- and S.I.- Engines is considered by the experts of automotive engineering worldwide as the best way for future economy and ecology engines [1]. Beside of the best fuel saving passenger cars driven by Diesel engines, advanced Diesel like Stratified Charge Engines as the CCSC (Controlled Combustion Stratified Charge) and the MESC (Mixture Exhaust Stratified Charge) -Engines open the way for future developments. Both engines work with the following new elements: Air assisted injection for the formation of the combustible mixture in the small cavities of prechambers, where the load control is achieved by the quantity of the injected fuel without the need of throttling the charge of the main chamber as common in today's SI engines. Pulsed Jet Combustion, where at first in small cavities of prechambers a rich mixture gets ignited.