초록 ▼

An operation control system for an engine using alcohol fuel or mixed fuel of alcohol and hydrocarbon, or for an engine supplying cooling liquid such as alcohol, water or the like as fuel. Vapor concentration in exhaust gas and an air excess ratio of air-fuel mixture are detected, and a supply rate

An operation control system for an engine using alcohol fuel or mixed fuel of alcohol and hydrocarbon, or for an engine supplying cooling liquid such as alcohol, water or the like as fuel. Vapor concentration in exhaust gas and an air excess ratio of air-fuel mixture are detected, and a supply rate of alcohol, a water absorption ratio of alcohol or an amount of the cooling liquid is computed on the basis of the vapor concentration and the air excess ratio. Ignition timing, temperature of the coolant, a compression ratio and an air excess ratio are controlled on the basis of the supply rate of alcohol or the water absorption ratio of alcohol. Further, the cooling liquid is supplied which has its amount computed at a heavy load. Thus, operational performance of the engine is improved.

대표청구항 ▼

An operation control system for an internal combustion engine, comprising: (a) means for supplying an air-fuel mixture of fuel and air, into a combustion chamber; (b) means for detecting vapor concentration in exhaust gas; (c) means for detecting an air excess ratio of the air-fuel mixture supplied

An operation control system for an internal combustion engine, comprising: (a) means for supplying an air-fuel mixture of fuel and air, into a combustion chamber; (b) means for detecting vapor concentration in exhaust gas; (c) means for detecting an air excess ratio of the air-fuel mixture supplied to the combustion chamber; (d) means for computing a supply condition of the fuel on the basis of said vapor concentration and said air excess ratio; (e) means for computing an amount of control determining a characteristic of the engine, on the basis of said supply condition of the fuel; and (f) means for controlling the engine on the basis of said amount of control.