초록 ▼

A multicylinder internal combustion engine is provided with a means for disabling several cylinders when reduced power can adequately operate the vehicle and an exhaust gas treatment device. An additional fuel injector is provided to increase fuel quantity when the temperature within the treatment d

A multicylinder internal combustion engine is provided with a means for disabling several cylinders when reduced power can adequately operate the vehicle and an exhaust gas treatment device. An additional fuel injector is provided to increase fuel quantity when the temperature within the treatment device falls below its operating temperature to compensate for the temperature reduction due to the sucking of air to the exhaust system through the disabled cylinders.

대표청구항 ▼

A multicylinder internal combustion engine including an intake manifold and a fuel injector for each of the cylinders of the engine adapted when activated for discharging fuel thereto, comprising: means disposed in the exhaust passage of said engine for reducing the amount of noxious components of t

A multicylinder internal combustion engine including an intake manifold and a fuel injector for each of the cylinders of the engine adapted when activated for discharging fuel thereto, comprising: means disposed in the exhaust passage of said engine for reducing the amount of noxious components of the emissions, said reducing means being normally operable when the temperature of the emissions is in a predetermined range; means for detecting when the level of output power required of the engine falls below a preset value; means for disabling certain of said fuel injectors when said power falls below said preset value, whereby air is drawn through the disabled cylinders to said reducing means resulting in a lowering of the temperature within said reducing means; means for providing a signal when the temperature within said reducing means falls below said normal operating temperature range; and means provided in said intake manifold for supplying fuel to all of said cylinders in response to said signal to thereby increase the temperature within said reducing means toward said operating range.