초록 ▼

In an internal-combustion engine having a supercharger and an air-bypass passage for controlling the idle speed, when the engine is being cranked, the air-bypass passage is completely open. When the engine is not being cranked and the supercharger is operating, the air-bypass passage is completely c

In an internal-combustion engine having a supercharger and an air-bypass passage for controlling the idle speed, when the engine is being cranked, the air-bypass passage is completely open. When the engine is not being cranked and the supercharger is operating, the air-bypass passage is completely closed. Further, when the engine is not being cranked and the supercharger is not operating, the opening of the air-bypass passage is adjusted in accordance with predetermined operating parameters.

대표청구항 ▼

A method for controlling the amount of intake-air in an internal-combustion engine having a supercharger, an intake-air passage, a throttle valve disposed in said intake-air passage, an air-bypass passage connecting the upstream side of said throttle valve to the downstream side thereof, and a contr

A method for controlling the amount of intake-air in an internal-combustion engine having a supercharger, an intake-air passage, a throttle valve disposed in said intake-air passage, an air-bypass passage connecting the upstream side of said throttle valve to the downstream side thereof, and a control valve disposed in said air-bypass passage, comprising the steps of: detecting the amount of air taken into said engine; detecting the engine speed; determining whether or not said engine is being cranked; when said engine is being cranked, completely opening said control valve; when said engine is not being cranked, determining whether or not said supercharger is operating dependent upon said intake-air amount and said engine speed; when said supercharger is operating, completely closing said control valve; when said supercharger is not operating, calculating the opening of said control valve dependent upon said intake-air amount and said engine speed so as to control said control valve dependent upon the calculated opening. An apparatus for controlling the amount of intake air in an internal-combustion engine having a supercharger, an intake-air passage, a throttle valve disposed in said intake-air passage, an air-bypass passage connecting the upstream side of said throttle valve to the downstream side thereof, and a control valve disposed in said air-bypass passage, comprising: means for detecting the amount of air taken into said engine; means for detecting the engine speed; means for determining whether or not said engine is being cranked; means for completely opening said control valve when said engine is being cranked; means for determining whether or not said supercharger is operating dependent upon said intake-air amount and said engine speed when said engine is not being cranked; means for completely closing said control valve when said supercharger is operating; means for calculating the opening of said control valve dependent upon said intake-air amount and said engine speed, so as to control said control valve dependent upon the calculated opening, when said supercharger is not operating.