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Perspectives on Improvement of Motor Vehicle Engine Output At Very Light Load
Published January 01, 1980 by Verlag Des Verein Deutscher Ingenieure GmbH in Germany
Fuel consumption of vehicles equipped with controlled ignition engines is high under conditions of partial load: urban traffic, limited speed, etc. Recognizing the lesser energy required, this fuel consumption is a manifestation of an especially low energy output. Additionally, functioning instabilities occur under very light load: deceleration, increased deceleration, etc. This behaviour, among other things, causes degradation of combustion.
The study reported here is intended to identify the types of combustion under these conditions of light load. The effect of such parameters as: richness, residual gases, turbulence, ignition characteristics, were studied and courses of action for improvements are proposed, including:
~ Controlled increase of the advance
~ Richer mixture
~ Increased spark plug electrode gap
~ Decreased electrode sections