公开(公告)号：US20230264672A1

公开(公告)日：2023-08-24

申请号：US18110294

申请日：2023-02-15

Applicant: Cummins Inc.

Inventor： Chunyi Xia ,  Andrew W. Osburn ,  David B. Snyder ,  Adam C. Cecil ,  Anant Puri ,  Ming-Feng Hsieh ,  Timothy Shipp

IPC: B60W10/06 ,  B60W10/08 ,  B60W20/15

CPC classification number: B60W10/06 ,  B60W10/08 ,  B60W20/15 ,  B60W2710/0677 ,  B60W2710/0666 ,  B60W2710/0605

Abstract: In a system having a hybrid powertrain having a piston internal combustion engine, and a motor/generator, and the motor generator being coupleable to a clutch and thereby to a gearbox, the engine further being equipped with a valvetrain control system operable to change the engine valve operation between a first mode in which the engine can operate in a conventional internal combustion mode and a second mode in which pumping losses are reduced when the engine is not operating in a conventional internal combustion mode. This allows it to be rotated without generating power, in a hybrid mode, with minimal losses.