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System and method for restarting an engine of vehicle automatically

一种发动机、再起动的技术，应用在车辆动力系领域，能够解决增加制动压力阈值、不利燃料经济性等问题

Active Publication Date: 2011-04-27
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, the increased brake pressure threshold is detrimental to fuel economy as fewer engine shutdowns will be performed

Method used

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  • System and method for restarting an engine of vehicle automatically
  • System and method for restarting an engine of vehicle automatically
  • System and method for restarting an engine of vehicle automatically

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Experimental program
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Embodiment Construction

[0027] The present invention will be better understood with reference to the following description taken in conjunction with the accompanying drawings.

[0028] Referring now to the accompanying drawings, figure 1 The micro HEV powertrain 10 includes a power source 12 (such as an internal combustion engine); an enhanced engine starter motor 14; an automatic transmission 16; an input shaft 18; an impeller 20 drivably connected to the engine through the shaft 18; 22; transmission output 24; final drive mechanism 26 connected to the output; electric auxiliary hydraulic pump (EAUX) 28, whose output pressurizes the hydraulic system of the transmission; battery 30, which supplies electrical energy to pump 28 and starter 14; Axle shafts 32 , 33 are drivably connected to drive wheels 34 , 35 via output 24 and final drive mechanism 26 .

[0029] The vehicle operator shifts gears manually through the range of P, R, N, D, and L positions within the automatic transmission mode slot 42 an...

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PUM

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Abstract

A method for restarting an engine of a vehicle includes engaging a gear of a transmission that driveably connects the engine and wheels of the vehicle; maintaining a current brake pressure greater than a reference brake pressure; initiating an automatic engine restart; using a timer to count down during a period of predetermined length; using a pump to produce a desired magnitude of brake pressure sufficient to suppress a wheel torque surge produced by restarting the engine and to hold the vehicle stationary; and releasing the brake pressure if either the timer expires or a peak in engine speed occurs. The engine automatic restarting process provided in the invention is smooth and comfortable.

Description

Technical field [0001] The invention generally involves the vehicle power department that can be applied to hybrid electric vehicles (HEV).More specific, the present invention involves the system and method of actively using the wheel brakes when controlling the re -start of the engine. Background technique [0002] HEV is a combination of conventional driving systems including multi -stage automatic transmission and internal combustion engines with vehicles that combine vehicles that improve fuel economy relative to traditional vehicles to improve fuel economy relative to traditional vehicles. [0003] Motor vehicles can be designed to use a hybrid electric vehicle technology without using a hybrid electric power system.This kind of vehicle with a traditional power system but no motor is used to drive the wheels (called Micro-Hev) that is stopped at idling to reduce fuel consumption and reduce emissions when the vehicle stops. [0004] During the normal operation of the vehicle,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/10B60W10/18B60W20/00B60W40/08B60W30/18
CPCB60W10/115B60W10/06B60W30/18054F16H61/0031B60K6/485B60W30/192Y02T10/6226Y10S477/901Y02T10/62B60K2006/268
Inventor 于海马休·A·布伊希瑞安·A·麦基
Owner FORD GLOBAL TECH LLC