Patent ID: 6332448
Filing Date: 2001-12-25
Classification: F02D,F02M,Y02T

Abstract:
An apparatus for supplying fuel in a fuel tank to an internal combustion engine, comprising:a separating device which separates fuel in the fuel tank into plural fuel components;a sensor which detects a running condition of the engine; anda mechanism which supplies the plural fuel components to the engine in different proportions depending on the running condition;wherein the supply mechanism comprises a microprocessor programmed to determine a proportion of the fuel components supplied to the engine based on the running condition, and a fuel injector which injects the plural fuel components according to the proportion determined by the microprocessor;wherein the plural fuel components comprise a high octane fuel component and a low octane fuel component which has a lower octane number than the high octane fuel component, and the sensor comprises a sensor which detects a load of the engine, and a sensor which detects a rotation speed of the engine;wherein the engine comprises an engine which performs compression self-ignition, and the microprocessor is further programmed to increase the high octane fuel component in the fuel components supplied to the engine when the load of the engine is in a predetermined first load region, and increase the low octane fuel component in the fuel components supplied to the engine when the load of the engine is in a second load region which corresponds to lower loads than the first load region.