Apparatus and method for controlling operation of engine
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorIl Kwon Park
Life of this patent
Estimating the term…
Abstract
An engine operation control apparatus includes a controller configured to: decide an engine operation time point based on a lookup table in which a learning value that is previously learned is stored when a request to switch to an HEV mode occurs; determine whether to engage an engine clutch by comparing an engine RPM when a speed of an engine is synchronized with a speed of a motor with a first motor RPM; operate the engine at the engine operation time point and control engagement of the engine clutch depending on the determination; and store the engine operation time point based on a second motor RPM at a synchronization completion time point when a learning condition of the engine operation time point is satisfied when the speed of the engine and the motor are synchronized.
Claims20
An engine operation control apparatus comprising a controller configured to:
- determine an engine operation start time point based on a lookup table in which a determination value, which is previously determined, is stored when a request to switch from electric vehicle (EV) mode to a hybrid electric vehicle (HEV) mode is received;
- determine whether to engage an engine clutch by comparing an engine revolutions per minute (RPM), when a speed of an engine operated at the engine operation start time point is synchronized with a speed of a motor, with a first motor RPM at which engagement of the engine to clutch is available;
- operate the engine at the engine operation start time point and control the engagement of the engine clutch depending on a determination result of engagement of the engine clutch;
- and
- store the engine operation start time point based on a second motor RPM at a synchronization completion time point when a determining condition with respect to the engine operation start time point is satisfied while the speed of the engine is synchronized with the speed of the motor.
An engine operation control method comprising steps of:
- determining, by a controller, an engine operation start time point based on a lookup table in which a determination value, which is previously determined, s stored when a request to switch from an EV mode to an HEV mode is received;
- operating, by the controller, an engine at the engine operation start time point;
- storing, by the controller, the engine operation start time point based on a second motor RPM at a synchronization completion start time point when a determination condition with respect to the engine operation start time point is satisfied while a speed of the engine is synchronized with a speed of a motor;
- comparing, by the controller, an engine RPM when the speed of the engine is synchronized with the speed of the motor with a first motor RPM at which engagement of the engine clutch is available to determine to engage the engine clutch;
- and
- controlling, by the controller, engagement of the engine clutch depending on the determination.
Dependencies are inferred from the claim text.