The Improvement of Lean Mixture Combustion in the Spark Ignition Engine by Stratified Charge in Large Prechamber

Format:

Conference/Event

Author/Creator:

Ditiu, Mircea, author.

Conference Name:

International Congress & Exposition (1998-02-23 : Detroit, Michigan, United States)

International Fuels and Lubricants Meeting and Exposition (1997-10-13 : Tulsa, Oklahoma, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1998

Summary:

The object of this study is to investigate a principle of obtaining stratified charge in spark ignition engine.The stratification is obtaining in a large prechamber which comprises 50% of the compression volume and which is connected to the main combustion chamber through a relatively large flow transfer passage. The fuel is injected (at any load) into the transfer flow passage, during the compression stroke and the air-fuel mixture is carried toward the spark plug.The control of mixture stratification and emissions can be achieved by the injection timing variation. The values of the specific fuel consumption and specific NOX emission are of the same level comparing to the values obtained for a Diesel engine with divided combustion chamber. While combustion stability at very lean operation is guaranteed intake air throttling in the part load range is necessary to keep combustion temperature high enough for effective oxidation of CO and HC.This stratification and combustion principle can be use on two or four stroke spark ignition engine, especially on two stroke spark ignition engine

Notes:

Vendor supplied data

Publisher Number:

980121

Access Restriction:

Restricted for use by site license