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hybrid vehicle

A technology for hybrid vehicles and vehicles, which is applied to hybrid vehicles, motor vehicles, power plants, etc., and can solve problems such as unstable gear shifting, user perception, and discontinuous torque

Active Publication Date: 2019-05-10
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the inertial torque is not counteracted or compensated, a powertrain disturbance or torque hole can occur, i.e., torque delivered to the wheels is discontinuous and perceived by the user
This shifting can be jerky and can be challenging to meet user expectations for vehicle handling and performance

Method used

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Embodiment Construction

[0024] The embodiments of the present disclosure are described here. However, it should be understood that the disclosed embodiments are merely examples, and other embodiments may be implemented in various and alternative forms. The drawings are not necessarily drawn to scale; some features may be exaggerated or minimized to show the details of specific components. Therefore, the specific structural and functional details disclosed herein should not be construed as limiting, but only as a representative basis for teaching those skilled in the art to apply the embodiments in different ways. As those of ordinary skill in the art will understand, various features shown and described with reference to any one of the drawings can be combined with features shown in one or more other drawings to produce what is not explicitly shown or described. Examples. The combinations of features shown provide representative embodiments for typical applications. However, for specific applicatio...

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PUM

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Abstract

A hybrid vehicle having an engine, an electric machine connected to the engine by an upstream clutch, a transmission gearbox connected to the electric machine by a downstream clutch, and a controller. The controller is configured to adjust pressure of the upstream clutch in response to a commanded upshift of the gearbox. A method for controlling a vehicle includes, in response to a commanded upshift of a gearbox, controlling an upstream clutch to a first non-zero speed differential to reduce inertial torque during the upshift, the first non-zero speed differential being in contact with a gear The box is associated with a first inertial counterpart located upstream of the gearbox. A method for controlling a vehicle includes slipping an upstream clutch and reducing output torque of an engine and an electric machine in response to a commanded upshift of a gearbox when the vehicle is outside an electric limit and a fast path torque reduction limit.

Description

Technical field [0001] Various embodiments relate to the control of hybrid vehicles during an upshift event. Background technique [0002] A hybrid electric vehicle (HEV) uses a combination of an internal combustion engine and an electric motor to provide the power and torque required to propel the vehicle. This arrangement provides improved fuel economy relative to vehicles with only internal combustion engines. Clutches can be used to control power flow during transient vehicle operations (for example, engine or motor speed increases or transmission shifts) in order to provide a smooth operation for the driver. [0003] During an upshift of the vehicle transmission, because the speed ratio of the transmission changes during the upshift, a change in inertia may occur in the power train. The change in inertia and the change in the speed ratio together produce an inertial torque or a resultant torque in the power train. If the inertial torque cannot be offset or compensated, a po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/18B60W10/06B60W10/08B60W10/02B60W20/00
CPCB60W10/06B60W10/08B60W10/10B60W20/40B60W2710/0666B60W2710/083Y10S903/902B60L15/2054B60L2240/423B60L2240/486B60L2240/507B60K6/387B60K6/48B60K6/547B60W10/02B60W20/00B60W30/19B60K2006/4825B60W2510/1095B60W2710/025Y02T10/72B60L50/16Y02T10/62Y02T10/64Y02T10/7072Y02T10/70
Inventor 罗吉特·乔赫里马克·斯蒂芬·耶马扎基梁伟王小勇瑞恩·亚伯拉罕·麦吉邝明朗
Owner FORD GLOBAL TECH LLC
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