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vehicle drive system

A transmission system and engine technology, applied to vehicle components, hybrid vehicles, motor vehicles, etc., can solve problems such as power transmission system disturbance, harmful effects of pressure, and pipeline pressure drop

Active Publication Date: 2017-04-26
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased flow to stroke the clutch with an oil pump running at low speed can cause an undesired drop in line pressure which can cause drivetrain disturbances
A drop in line pressure can have a detrimental effect on controlling the pressure applied by the launch clutch or torque converter bypass clutch

Method used

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Examples

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Embodiment Construction

[0019] The illustrated embodiments are disclosed with reference to the drawings. It will be understood, however, that the disclosed embodiments are intended to be merely examples that can be embodied in various and alternative forms. The figures are not necessarily to scale and some features may be exaggerated or minimized to show details of particular components. Specific structural and functional details disclosed are not to be interpreted as limiting, but rather as a representative basis for teaching one skilled in the art how to practice the disclosed concepts.

[0020] refer to figure 1 , a modular hybrid transmission (MHT) system 10 is shown diagrammatically and includes an electric traction motor 12 , an internal combustion engine 14 and a transmission gearbox 16 . A disconnect clutch 20 is operably disposed between the engine 14 and the motor 12 to selectively connect and disconnect the engine 14 from the motor 12 . A shock absorber 22 may also be provided between t...

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PUM

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Abstract

A drivetrain for a vehicle having an internal combustion engine, an electric motor, and a transmission is provided. The transmission system includes: a first clutch, operatively connected between the engine and the motor; and a one-way clutch. A one-way clutch is connected in parallel with the first clutch, and when the first clutch is disengaged, the one-way clutch allows the engine to increase in speed until the engine speed matches the motor speed. When the engine speed matches the motor speed, the engine provides positive torque to the motor and transmission through the one-way clutch. The first clutch and the one-way clutch may be a hybrid rocker one-way clutch.

Description

technical field [0001] The present disclosure relates to a transmission for a vehicle having an internal combustion engine connected by a one-way clutch to an electric motor and a transmission gearbox. Background technique [0002] A hybrid electric vehicle can connect a combination of an internal combustion engine and an electric motor in series to provide the power needed to propel the vehicle, improving fuel economy compared to conventional vehicles. One way to improve the fuel economy of a hybrid vehicle is to shut down the engine during periods of engine inefficiency and use the electric motor to provide all the power required to propel the vehicle. If the driver needs more power than the electric motor can provide or if the battery is depleted, the engine must be started quickly and smoothly, barely noticeable by the driver. [0003] Modular Hybrid Transmission (MHT) is a pre-transmission parallel hybrid in which the disconnect clutch is located between the electric m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K6/36B60K6/387
CPCB60K6/383B60K6/48B60W10/02B60K2006/4825Y10S903/913B60W20/40Y02T10/62B60W10/06B60W2510/0638B60W2510/081B60W2710/02
Inventor 沃尔特·约瑟夫·欧特曼丹尼尔·斯科特·科尔文伯纳德·D·内佛西
Owner FORD GLOBAL TECH LLC