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Hybrid vehicle

A hybrid vehicle and clutch technology, applied in hybrid vehicles, motor vehicles, power plants, etc., can solve problems such as unstable shifting, user perception, discontinuous torque, etc.

Active Publication Date: 2015-05-20
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 may 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] Embodiments of the present disclosure are described herein. It should be understood, however, that the disclosed embodiments are merely examples, and that other embodiments may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the embodiments. As will be understood by those of ordinary skill in the art, various features shown and described with reference to any one figure may be combined with features shown in one or more other figures to produce Example. The combinations of features shown provide representative embodiments for typical applications. However, various combinations and modifications of the features consistent with the teachings of...

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Abstract

A hybrid vehicle has 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, in response to a commanded upshift of the gearbox, modulate a pressure of the upstream clutch. A method for controlling a vehicle includes, in response to a commanded upshift of a gearbox, controlling an upstream clutch to a first nonzero speed differential corresponding to a first inertia connected to and upstream of the gearbox to reduce inertia torque during the upshift. A method for controlling a vehicle includes, in response to a commanded upshift of a gearbox when the vehicle is beyond an electrical limit and a fast path torque reduction limit, slipping an upstream clutch and reducing torque outputs of an engine and an electric machine.

Description

technical field [0001] Various embodiments relate to the control of a hybrid vehicle during an upshift event. Background technique [0002] A hybrid electric vehicle (HEV) utilizes a combination of an internal combustion engine and an electric motor to provide the power and torque needed to propel the vehicle. This arrangement provides improved fuel economy relative to vehicles having only an internal combustion engine. Clutches can be used to control power flow during transient vehicle operations (eg, engine or electric motor speed increases or transmission shifts) to provide smooth operation for the driver. [0003] During a vehicle transmission upshift, a change in inertia occurs in the powertrain as the transmission ratio changes during the upshift. The change in inertia together with the change in speed ratio produces an inertial or resultant torque in the powertrain. If the inertial torque is not counteracted or compensated, a powertrain disturbance or torque hole, ...

Claims

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Application Information

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Patent Type & Authority Applications(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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