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Method of operating oil supply using estimated future oil pressure

A technology of oil feeder and controller, which is applied in the control of lubricant temperature, transmission device control, machine/engine, etc. It can solve the problem of low oil pressure and reduce the effect of low oil pressure

Inactive Publication Date: 2011-03-30
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the problem to be solved by the present invention is to provide an operation method and a controller of the oil feeder so that the fuel consumption and CO of the internal combustion engine 2 Reduced emissions and no low oil pressure when starting the combustion engine

Method used

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  • Method of operating oil supply using estimated future oil pressure
  • Method of operating oil supply using estimated future oil pressure

Examples

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Embodiment Construction

[0021] Such as figure 1 As shown, a motor vehicle has a vehicle speed v 1 and can be at time t 1 slow down. Under the assumption of constant deceleration, the vehicle speed decreases until time t 3 reaches the vehicle speed v 0 =0km / h. Usually at the vehicle speed v 0 From 0:00 to the time t when the automatic start / stop device of the motor vehicle starts the automatic stop of the internal combustion engine of the motor vehicle 4 It takes a while.

[0022] from time t 1 Start, monitor according to the method of the present invention at time t 4 Whether there will be a minimum oil pressure supplied to the oil supply system. When e.g. the current moment is t 2 , based on the actual vehicle speed v 2 and the actual acceleration value Calculate until time t 4 stop time t stop . Consider the delay time t from when the speed of the motor vehicle reaches 0 to when the automatic start / stop device of the motor vehicle starts to stop automatically delay = t 4 -t 3 . W...

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Abstract

A method for operating an oil supply for a combustion engine and / or a transmission system of a motor vehicle with start / stop-automatic comprises detected a deceleration of the vehicle and monitoring at least one status parameter which correlates with a manner of the deceleration. The method estimates a future oil pressure of the oil supply based on the status parameter and an actual oil supply control strategy and if the estimated future oil pressure is below a predetermine threshold of the oil pressure, an oil pump is activated which fills an accumulator tank. Also claimed is controller for carrying out the method and an oil supply system which is operated by the controller using the method. The accumulator tank is filled in advance of a possible automatic stop so that there is a sufficient high oil pressure when the combustion engine is started again and a period of time for the automatic stop is not lengthened. This leads to a reduction of the fuel consumption and the CO2 emissions.

Description

technical field [0001] The invention relates to a method for operating an oil supply of an internal combustion engine and / or a transmission system of a motor vehicle and to a corresponding controller, by means of which the oil pressure of the oil supply system can be controlled. Background technique [0002] It is known from DE 10041789 A1 to override the automatic stop command of the internal combustion engine with an automatic start / stop device when the oil pressure is low. This way the oil pump can first fill the oil storage tank before the internal combustion engine stops due to the current automatic stop command. When the internal combustion engine is started, sufficient oil pressure can be provided due to the override. [0003] The disadvantage of this approach is the fuel consumption of the internal combustion engine and the CO 2 Emissions are high. Contents of the invention [0004] Therefore, the problem to be solved by the present invention is to provide an op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/30B60W20/00F16H61/00B60W30/18
CPCB60W2520/10B60W2520/105F16H2312/14B60W10/30F01M5/02F16H61/0021F01M7/00B60W30/18127F16H2061/0034B60W2510/1075B60W50/0097B60W10/06B60W30/18018F16H61/12
Inventor 马蒂厄斯·汉森佩尔·弗罗伊登塔勒
Owner GM GLOBAL TECH OPERATIONS LLC