公开(公告)号：US20170299033A1

公开(公告)日：2017-10-19

申请号：US15131763

申请日：2016-04-18

Applicant: Caterpillar Inc.

Inventor： Michael Cronin ,  Kevin Meyer

IPC: F16H47/04

CPC classification number: F16H47/04 ,  F16H37/046 ,  F16H2037/088 ,  F16H2037/0893 ,  F16H2047/045

Abstract: A powertrain system in a machine includes a transmission, and a transmission drive mechanism coupled between the transmission and an engine. The transmission drive mechanism includes a split path architecture where a first input gear receives a torque input from a driveshaft and a second input gear receives a torque input from a variator. The transmission drive mechanism is thereby structured to operate the transmission at a range of speeds that is not dependent upon a speed of the engine, enabling the engine to operate at an engine speed set point or with an optimum engine speed range.

公开(公告)号：US10214090B1

公开(公告)日：2019-02-26

申请号：US15685674

申请日：2017-08-24

Applicant: Caterpillar Inc.

Inventor： Evan Jacobson ,  John Seipold ,  Michael Cronin

IPC: B60K6/30 ,  B60K6/365 ,  B60K6/485 ,  B60W10/115 ,  B60W10/02 ,  B60W10/04 ,  B60K6/48

Abstract: A power system includes an engine, a driveshaft, and an energy storage system having a flywheel. The energy storage system further includes a transmission structured to transfer energy between the flywheel and the driveshaft. The transmission includes a differential geartrain and a variator coupled to the differential geartrain and having a variator input shaft and a variator output shaft rotatable at a range of speed ratios. The variator may be coupled to a sun gear in the differential geartrain and controls a pattern of energy transfer between the flywheel and the driveshaft.

公开(公告)号：US20190061510A1

公开(公告)日：2019-02-28

申请号：US15685674

申请日：2017-08-24

Applicant: Caterpillar Inc.

Inventor： Evan Jacobson ,  John Seipold ,  Michael Cronin

IPC: B60K6/30 ,  B60K6/365 ,  B60K6/485 ,  B60W10/115 ,  B60W10/02 ,  B60W10/04

Abstract: A power system includes an engine, a driveshaft, and an energy storage system having a flywheel. The energy storage system further includes a transmission structured to transfer energy between the flywheel and the driveshaft. The transmission includes a differential geartrain and a variator coupled to the differential geartrain and having a variator input shaft and a variator output shaft rotatable at a range of speed ratios. The variator may be coupled to a sun gear in the differential geartrain and controls a pattern of energy transfer between the flywheel and the driveshaft.

公开(公告)号：US10077828B2

公开(公告)日：2018-09-18

申请号：US15131763

申请日：2016-04-18

Applicant: Caterpillar Inc.

Inventor： Michael Cronin ,  Kevin Meyer

IPC: F16H47/04 ,  F16H37/04

CPC classification number: F16H47/04 ,  F16H37/046 ,  F16H2037/088 ,  F16H2037/0893 ,  F16H2047/045

Abstract: A powertrain system in a machine includes a transmission, and a transmission drive mechanism coupled between the transmission and an engine. The transmission drive mechanism includes a split path architecture where a first input gear receives a torque input from a driveshaft and a second input gear receives a torque input from a variator. The transmission drive mechanism is thereby structured to operate the transmission at a range of speeds that is not dependent upon a speed of the engine, enabling the engine to operate at an engine speed set point or with an optimum engine speed range.