公开(公告)号：US11834050B2

公开(公告)日：2023-12-05

申请号：US17426207

申请日：2020-02-27

Applicant: Hitachi Astemo, Ltd.

Inventor： Ragesh R ,  Shin Yamauchi ,  Kengo Kumano ,  Kazuhiro Oryoji

IPC: B60W30/194 ,  B60W20/16 ,  F02N11/08 ,  F02N19/02

CPC classification number: B60W30/194 ,  B60W20/16 ,  F02N11/0848 ,  F02N19/02 ,  B60W2510/0676 ,  B60W2510/244 ,  B60W2510/246 ,  B60W2510/305 ,  B60W2520/10 ,  F02N2200/023 ,  F02N2200/061 ,  F02N2200/0801

Abstract: The present disclosure relates to a method and a control unit for controlling pre-warming process of an engine of a Hybrid Electric Vehicle (HEV). The method comprises determining start-up time of the engine. The method also comprises determining engine heating time for the engine. The pre-warming process of the engine is initiated prior to start up time of the engine. The process of pre-warming is discontinued when the determined start-up time of the engine is greater than the engine heating time and the process is restarted when the determined start-up time of the engine is less than the engine heating time and when the pre-warming process of the engine is discontinued. The above-mentioned process is reiterated at plurality of time intervals for controlling the pre-warming process of the engine which results in energy efficiency and sufficient heat for warm-up of the engine.

公开(公告)号：US20220097712A1

公开(公告)日：2022-03-31

申请号：US17426207

申请日：2020-02-27

Applicant: Hitachi Astemo, Ltd.

Inventor： Ragesh R ,  Shin YAMAUCHI ,  Kengo KUMANO ,  Kazuhiro ORYOJI

IPC: B60W30/194 ,  F02N11/08 ,  B60W20/16 ,  F02N19/02

Abstract: The present disclosure relates to a method and a control unit for controlling pre-warming process of an engine of a Hybrid Electric Vehicle (HEV). The method comprises determining start-up time of the engine. The method also comprises determining engine heating time for the engine. The pre-warming process of the engine is initiated prior to start up time of the engine. The process of pre-warming is discontinued when the determined start-up time of the engine is greater than the engine heating time and the process is restarted when the determined start-up time of the engine is less than the engine heating time and when the pre-warming process of the engine is discontinued. The above-mentioned process is reiterated at plurality of time intervals for controlling the pre-warming process of the engine which results in energy efficiency and sufficient heat for warm-up of the engine.