Engine control device
AssigneeSuzuki Motor Corporation
InventorToru Sawada
Life of this patent
Estimating the term…
Abstract
An engine control device includes: an electronically controlled throttle which controls a flow rate of air-fuel mixture flowing into a cylinder of an engine by controlling a throttle opening angle electronically; an ignition device which ignites an air-fuel mixture existing in the cylinder; and an engine control unit which executes an ignition timing/throttle opening angle changing process of controlling the ignition device and the electronically controlled throttle while an operation of a body to be driven by the engine is in a steady state so as to advance a timing of ignition of an air-fuel mixture existing in the cylinder and to reduce the throttle opening angle while torque of the engine is kept constant.
Claims20
An engine control device comprising:
- an electronically controlled throttle which controls a flow rate of air-fuel mixture flowing into a cylinder of an engine by controlling a throttle opening angle electronically;
- an ignition device which ignites an air-fuel mixture existing in the cylinder;
- and
- an engine control unit which executes an ignition timing/throttle opening angle changing process of controlling the ignition device and the electronically controlled throttle while an operation of a body to be driven by the engine is in a steady state so as to advance a timing of ignition of an air-fuel mixture existing in the cylinder and to reduce the throttle opening angle so that a torque after a change to a reduced throttle opening angle and advanced ignition timing that is obtained at any time point while the body is in a steady traveling state is always equal to a torque before a change to the reduced throttle opening angle and the advanced ignition timing that is obtained at the same time point.
Dependencies are inferred from the claim text.