Vehicle and Control Device and Control Method Thereof
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorYuichiro SAWADA
Life of this patent
Estimating the term…
Abstract
A vehicle with a transmission having a crankshaft and an output shaft. A clutch located between the output shaft and a drive wheel is engaged and disengaged according to a rotational speed of the output shaft. An idle speed control device performs idle speed control to adjust an idle rotational speed of an engine. An electronic control unit (ECU) suppresses or stops the idle speed control when the clutch is engaged, or when an abnormality in the transmission is detected.
Claims14
A vehicle comprising:
- a drive wheel;
- an engine;
- an electronic continuously variable transmission that adjusts a transmission gear ratio between an input shaft connected to the engine and an output shaft;
- a clutch located between the engine and the drive wheel that is engaged or disengaged according to a rotational speed of the input or output shaft;
- an idle speed control device that performs idle speed control to adjust an idle rotational speed of the engine;
- and
- a control unit that suppresses or stops the idle speed control when the clutch is engaged.
A vehicle comprising:
- a drive wheel;
- an engine;
- an electronic continuously variable transmission that adjusts a transmission gear ratio between an input shaft connected to the engine and an output shaft;
- a clutch located between the engine and the drive wheel that is engaged or disengaged according to a rotational speed of the input or output shaft;
- an idle speed control device that performs idle speed control to adjust an idle rotational speed of the engine;
- and
- a control unit that suppresses or stops the idle speed control when an abnormality is detected in the continuously variable transmission.
A controller for a vehicle having a clutch between an engine and a drive wheel that is engaged or disengaged according to a rotational speed of an input shaft or an output shaft of a continuously variable transmission, and an idle speed control device for performing idle speed control to adjust an idle rotational speed of the engine, wherein
- the controller suppresses or stops the idle speed control when the clutch is engaged.
A controller for a vehicle having a clutch between an engine and a drive that is engaged or disengaged according to a rotational speed of an input shaft or an output shaft of a continuously variable transmission, and an idle speed control device for performing idle speed control to adjust an idle rotational speed of the engine, wherein
- the controller suppresses or stops the idle speed control when an abnormality is detected in the continuously variable transmission.
A control method for a vehicle having a clutch located between an engine and a drive wheel that is engaged or disengaged according to a rotational speed of an input shaft or an output shaft of a continuously variable transmission, and an idle speed control device for performing idle speed control to adjust an idle rotational speed of the engine, wherein the control method comprises:
- suppressing or stopping the idle speed control when the clutch is engaged.
A control method for a vehicle having a clutch located between an engine and a drive wheel that is engaged or disengaged according to a rotational speed of an input shaft or an output shaft of a continuously variable transmission, and an idle speed control device for performing idle speed control to adjust an idle rotational speed of the engine, wherein the control method comprises:
- detecting an abnormality in the continuously variable transmission;
- and
- suppressing or stopping the idle speed control when an abnormality is detected.
Dependencies are inferred from the claim text.