| 摘要 |
<p>System for estimating the richness of the gaseous mixture in the combustion chamber of an internal combustion engine (1) of a motor vehicle power plant, comprising means (43) for injecting an additional combustible gas into a fresh air intake circuit (3) of the engine, means (36, 44) for measuring concentrations of the additional gas in the fresh air intake circuit (3) and in an engine exhaust gas circuit (4) respectively, means (46) for determining a ratio between the measured concentration of the additional gas in the intake circuit and the measured concentration of the additional gas in the exhaust circuit, and means (47) for estimating the richness of the gaseous mixture in the combustion chamber of the engine from the determined ratio.</p> |
