Throttle device
AssigneeMikuni Corporation
InventorIsamu Tanaka
Life of this patent
Estimating the term…
Abstract
Provided is a throttle device including a total of two throttle units in an engine for each two cylinders, each of the throttle units having a unit body having intake air passages corresponding to the four cylinders of the engine, a throttle shaft rotatably supported by the unit body, throttle valves secured to the throttle shaft to open and close the intake air passages for the cylinders, and a motor driving and rotating the throttle shaft, in which a first motor provided in a first throttle unit and a second motor provided in a second throttle unit out of the two throttle units have mutually different responsivities to a change in rotation speed.
Claims14
A throttle device comprising:
- a plurality of throttle units provided in an engine for each of cylinders or for each of cylinder groups, each of the throttle units including
- a throttle body having intake air passages corresponding to the plurality of cylinders of the engine,
- a throttle shaft rotatably supported by the throttle body,
- throttle valves secured to the throttle shaft to open and close the intake air passages for the cylinders, and
- a motor driving and rotating the throttle shaft,
- wherein a first motor that is the motor provided in a first throttle unit and a second motor that is the motor provided in a second throttle unit out of the plurality of throttle units are electric motors,
- at least either numbers of windings or wire diameters of coils are set to be different between the first motor and the second motor, and
- the first motor and the second motor have mutually different responsivities to a change in rotation speed.
A throttle device comprising:
- a plurality of throttle units provided in an engine for each of cylinders or for each of cylinder groups, each of the throttle units including
- a throttle body having intake air passages corresponding to the plurality of cylinders of the engine,
- a throttle shaft rotatably supported by the throttle body,
- throttle valves secured to the throttle shaft to open and close the intake air passages for the cylinders, and
- a motor driving and rotating the throttle shaft,
- wherein a first motor that is the motor provided in a first throttle unit and a second motor that is the motor provided in a second throttle unit out of the plurality of throttle units are electric motors
- a control unit outputting drive currents to the first motor and the second motor,
- wherein the control unit outputs the drive currents different from each other to the first motor and the second motor to set mutually different responsivities to a change in rotation speed for the first motor and the second motor.
Dependencies are inferred from the claim text.