US 2022/0025971 A1Published application

Method of controlling engine and transmission of hybrid vehicle

AssigneesHyundai Motor Company, Kia Motors Corporation

InventorsJun Sung Park, Jaebin Lee

Life of this patent

Estimating the term…

Loading patent…

Abstract

A method of controlling an engine and a transmission of a hybrid vehicle includes steps of: determining whether the vehicle starts, determining an engine RPM and a gear stage of a transmission if the vehicle has started, determining whether the engine RPM has reached an engine speed control point, determining an engine target RPM and an engine target RPM slope of the vehicle when it is determined that the engine RPM has reached the engine speed control point, controlling the engine RPM of the vehicle to follow the engine target RPM and the engine target RPM slope, determining whether the engine RPM has slipped compared to the target engine RPM, and performing PID control to follow the engine target RPM if the engine RPM slips compared to the engine target RPM.

Claims11

Dependent claims

A method of controlling an engine and a transmission of a vehicle, comprising:

determining, by a controller, whether the vehicle starts or not;
determining, by the controller, an engine RPM and a gear stage of a vehicle transmission if the vehicle has started;
determining, by the controller, whether the engine RPM has reached an engine speed control point;
determining, by the controller, an engine target RPM and an engine target RPM slope of the vehicle when it is determined that the engine RPM has reached the engine speed control point;
controlling, by the controller, the engine RPM of the vehicle to follow the engine target RPM and the engine target RPM slope;
determining, by the controller, whether the engine RPM has slipped compared to the target engine RPM;
performing proportional integral derivative (PID) control, by the controller, to follow the engine target RPM if the engine RPM slips compared to the engine target RPM;
determining, by the controller, whether engine RPM control of the vehicle is ended;
and
ending the engine RPM control, by the controller, of the vehicle if it is determined that the engine RPM control of the vehicle is ended.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/075,100Filed 20 Oct 2020
Published: 27 Jan 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification32 codes

F02D 41/023
In relation with elements of the transmission: in relation with the gear ratio shifting
F16H 63/502
Signals to an engine or motor: for smoothing gear shifts
B60W 10/02
Conjoint control of vehicle sub-units of different type or different function: including control of driveline clutches
B60W 10/06
Including control of propulsion units: including control of combustion engines