초록 ▼

A system for heating the intake pipe of an internal combustion engine including a combustion equipment disposed adjacent to the intake pipe, a fuel supply system for supplying the fuel into the combustion equipment and an air supply system including an air pump for charging the air into the combusti

A system for heating the intake pipe of an internal combustion engine including a combustion equipment disposed adjacent to the intake pipe, a fuel supply system for supplying the fuel into the combustion equipment and an air supply system including an air pump for charging the air into the combustion equipment, the intake pipe being heated by the heat generated by the combustion of the air-fuel mixture in the combustion equipment. The fuel supply system includes a main fuel injection nozzle and an auxiliary fuel injection nozzle which is controlled by control means so as to start or stop the fuel injection depending upon the operating conditions of the engine. When the engine is started, both the main and auxiliary fuel injection nozzles inject fuel so as to attain the rapid heating of the intake pipe, but when the temperature of the intake pipe exceeds a predetermined level, the injection by the auxiliary fuel injection nozzle is stopped. The heating system further includes a secondary air supply line interconnecting the air pump and the exhaust manifold of the engine and control means for controlling the flow rate of the secondary air in response to the negative pressure in the intake pipe, thereby controlling the flow rate of the air to be charged into the combustion equipment.

대표청구항 ▼

In an internal combustion engine including an intake pipe and an exhaust manifold, a system for heating the intake pipe comprising a. a combustion equipment disposed adjacent to said intake pipe for heating the same and including a mixing chamber where the air and fuel are mixed, a combustion chambe

In an internal combustion engine including an intake pipe and an exhaust manifold, a system for heating the intake pipe comprising a. a combustion equipment disposed adjacent to said intake pipe for heating the same and including a mixing chamber where the air and fuel are mixed, a combustion chamber which is communicated with said mixing chamber and in which the air-fuel mixture is burned, and an ignition means for igniting the air-fuel mixture; b. a fuel supply system adapted to supply the fuel into said combustion equipment and including a main fuel injection nozzle and an auxiliary fuel injection nozzle so arranged as to inject the fuel into said mixing chamber of said combustion equipment; c. an air supply system adapted to supply the air into said combustion equipment and including an air pump connected through air supply lines with said mixing chamber and said combustion chamber of said combustion equipment; and d. control means adapted to control said auxiliary fuel injection nozzle so as to start or stop the fuel injection into said mixing chamber depending upon an operating condition of the engine.