Honda Giken Kogyo Kabushiki Kaisha

Honda Giken Kabushiki Kaisha

Ritsuko Terawaki

Norio Suzuki

Yosuke Tachibana

Yasuo Takagi

Kazuo Hirabayashi

Yutaka Ide

Hideaki Hosoya

Toshiharu Aoshima

Masahiro Izumi

An apparatus of controlling an intake air throttle valve capable of obtaining the certain drive for the change in the load applied to the throttle valve due to the change in the intake air amount in the transient period, without any increase in current consumption and reduction in responsiveness. The apparatus includes a throttle valve for controlling an intake air amount in the internal combustion engine; a motor for electrically controlling the throttle valve; and a drive circuit for controlling the drive torque of the motor. It further includes a throttle valve opening defining device for defining a parameter indicating the opening of the throttle valve; a comparing device for comparing the value of the parameter defined by the throttle valve opening defining device; and a torque increasing device for increasing the output torque by the drive circuit when the comparing device judges that the value of the parameter is larger than the specified value.

Apparatus of controlling intake air throttle valve for internal

An intake system in a multi-cylinder type internal combustion engine comprises throttle valves disposed in a plurality of intake passages commonly connected to an air cleaner, and fuel injection valves disposed in the intake passages downstream of the throttle valves in an intake direction. In such intake system, a plurality of funnel-shaped portions are provided in a throttle body having opposite ends directly coupled to an intake manifold and an air cleaner, respectively, and each of the throttle valves is disposed in the throttle body, so that its upstream end in the intake direction is located at least on the corresponding funnel-shaped portion, when the throttle valve is fully opened. The throttle body includes ports provided therein, which are opened into the intake passages between a coupled surface of the throttle body to the intake manifold and the throttle valves, respectively, and which communicate with one another. This provides an increase in space efficiency and an increase in intake inertial effect.

Intake system in multi-cylinder type internal combustion engine

Growing community of inventors

Saitama, Japan

Ritsuko Terawaki