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Hybrid powertrain system

A technology of power transmission system and transmission speed ratio, applied in the direction of hybrid vehicles, transmission devices, power devices, etc., can solve the problems of complex hardware and control systems, regenerative braking needs, etc., to improve the quality of gear shifting and realize automatic power The effect of shifting gears

Inactive Publication Date: 2005-08-17
EATON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another limitation of this powertrain is that regenerative braking of the vehicle requires complex hardware and control systems

Method used

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Embodiment Construction

[0022] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. refer to figure 1 , the hybrid powertrain 20 includes a first prime mover 22, such as a spark ignition internal combustion engine and a compression ignition internal combustion engine; a shift / shift gear transmission 24 and a second prime mover 26, such as an electric motor / generator or a hydraulic motor / pump. The hybrid powertrain 20 is selectively provided with a master clutch 28 (shown in phantom), such as a master friction clutch, which is selectively operable to disengage the first prime mover 22 from the transmission 24 .

[0023] An electronic control unit (ECU) 30 is installed in the power transmission system 20 for controlling the first prime mover 22 , the second prime mover 26 and the transmission 24 . ECU 30 preferably includes a conventional programmable digital computer (not shown) configured to accept various input signals includi...

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Abstract

A hybrid powertrain system (20) is provided that includes a first prime mover (22) having a rotational output, a second prime mover (26) having a rotational output, and a transmission having a main shaft (44) supporting at least two main shaft gears (64, 66, 70, 72, 74) thereon. The transmission includes a first independent countershaft (40) drivingly connected to the first prime mover (22) and including at least one ratio gear supported thereon that meshes with a respective main shaft gear (64, 66, 70). A second independent countershaft (42) is drivingly connected to the second prime mover (26) and includes at least one ratio gear supported thereon that meshes with a respective main shaft gear. The ratio gears on the first and second countershafts (40, 42) cooperate with the main shaft (44) gears to provide at least one gear ratio between the first and the second countershafts and the main shaft. A shift control mechanism (98) selectively engages and disengages the first and second countershafts for rotation with tha main shaft.

Description

technical field [0001] The present invention relates generally to powertrains and more particularly to hybrid powertrains employing at least two prime movers and a dual independent countershaft transmission. Background technique [0002] Hybrid vehicle powertrains that employ two or more prime movers to drive the vehicle are well known in the art. Existing hybrid powertrains utilize an internal combustion engine operated in conjunction with an electric motor to deliver drive torque to the vehicle's wheels. [0003] So-called "parallel hybrid" drivetrains have been developed that connect an electric motor in-line between the vehicle's engine and the transmission. In one known parallel hybrid system, the rotor of the electric motor is directly connected to the output shaft of the engine. In such a parallel hybrid powertrain, the master clutch must be operated in a conventional manner to disengage the engine from the transmission. Such use of conventional clutches makes powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/36B60K6/365B60K6/48B60K6/547B60W10/115F16H3/08F16H3/093F16H3/097F16H61/688F16H63/20
CPCB60K2741/105F16H37/065B60K6/48F16H63/20B60K6/36B60K6/547F16H3/097B60K6/365Y02T10/6221F16H61/688B60W10/115B60W20/00Y10T74/19233Y10T74/19135Y02T10/62
Inventor W·K·奥尼尔R·C·格里洛D·M·普雷斯顿
Owner EATON CORP
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