Patent ID: 9410499
Filing Date: 2016-08-09
CPC Classification: F02D,Y02T

Claim Text:
1. A control system for a multi-fuel internal combustion engine of compression ignition type which uses a liquid fuel being able to be ignited by compression, and a gas fuel being lower in ignitability than the liquid fuel, wherein an equivalent ratio control unit is provided which, when the liquid fuel and the gas fuel are caused to combust with the liquid fuel being used as an ignition source, increases the equivalent ratio of a mixture in a cylinder, in comparison with the case where only the liquid fuel is caused to combust in the same operating state, and makes smaller the rate of the increase of the equivalent ratio with respect to the case where only the liquid fuel is caused to combust, when an engine load is low in comparison with the time when the engine load is high, and when an engine rotational speed is low in comparison with the time when the engine rotational speed is high.