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Method for adapting the performance of a fuel prefeed pump of a motor vehicle

A pre-transportation and motor vehicle technology, applied in the direction of machines/engines, fuel injection control, mechanical equipment, etc., can solve the problems of increasing fuel consumption and carbon dioxide emissions, and achieve the effect of minimizing energy demand and reducing fuel consumption

Active Publication Date: 2014-09-10
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also increases fuel consumption and the corresponding CO2 emissions of the motor vehicle

Method used

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  • Method for adapting the performance of a fuel prefeed pump of a motor vehicle
  • Method for adapting the performance of a fuel prefeed pump of a motor vehicle
  • Method for adapting the performance of a fuel prefeed pump of a motor vehicle

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Embodiment Construction

[0017] figure 1 A block diagram illustrating an embodiment of the invention is shown. The device shown has a fuel tank 1 from which fuel is fed via a fuel filter 3 and a volume flow regulating valve 5 to a high-pressure fuel pump 9 using a prefeed pump 2 . The pre-delivery pump 2 can be controlled electrically and is supplied with a control signal s1 provided by the controller 14 .

[0018] The fuel is compressed to a desired high pressure level in the high-pressure fuel pump 9 .

[0019] The fuel delivered from the high-pressure fuel pump 9 is passed on to a pressure accumulator or rail 11 and from there injected into the associated combustion chambers of the motor vehicle by means of injectors 13 controlled by a controller 14 , which The combustion chamber is assigned to the internal combustion engine of the motor vehicle. The control signals provided by the controller 14 for the injector 13 are denoted by symbols s3, s4, s5 and s6. By means of a high-pressure sensor 12 ...

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Abstract

The invention relates to a method for adapting the performance of a prefuel pump of a motor vehicle having a common rail injection system and an internal combustion engine. After switching on the ignition and before starting the internal combustion engine, an adaptation value assigned to the prefuel pump describing its individual behavior is determined and stored. After starting the internal combustion engine, this stored adaptation value is taken into account when determining the control signal for the prefeed pump.

Description

technical field [0001] The invention relates to a method for adapting the performance of a prefuel pump of a motor vehicle having a common rail injection system and an internal combustion engine. Background technique [0002] Common rail injection systems are known. This is an injection system for a combustion engine, in which a high-pressure pump raises the fuel to a high pressure level. Fuel under pressure fills a pipe system that is always under pressure while the engine is running. [0003] Such a common rail injection system is known from DE 10 2006 023 470 A1. The system described there has a high-pressure fuel pump for delivering fuel, a high-pressure fuel accumulator connected to the high-pressure fuel pump for storing fuel at an injection pressure relative to the environment of the common rail injection system, An injector connected to the high-pressure fuel accumulator for delivering fuel to at least one combustion chamber, and an injector for returning fuel fro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/38
CPCF02D41/3854F02D2200/0602F02D2250/31
Inventor U.容J.拉德齐基M.沃科夫斯基
Owner VTESCO TECH GMBH
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