Method and device for controlling fuel metering system of an internal combustion engine

An internal combustion engine and fuel technology, applied in electrical control, fuel injection pump, engine control, etc., can solve the problem of suboptimal fuel consumption and achieve the effect of energy saving

Active Publication Date: 2017-07-28
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In mass production, this leads to overly increased preload values ​​on average
Since the generation of the low pressure by the delivery pump requires energy from the on-board electrical system, this method is not optimal for the fuel consumption of the vehicle due to tolerance tolerances.

Method used

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  • Method and device for controlling fuel metering system of an internal combustion engine
  • Method and device for controlling fuel metering system of an internal combustion engine
  • Method and device for controlling fuel metering system of an internal combustion engine

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Embodiment Construction

[0016] exist figure 1 The basic elements of a fuel distribution system (Kraftstoffzumesssystem) are shown in . exist figure 1 , the transfer pump (Förderpumpe) is marked with 100. The delivery pump delivers fuel from the storage tank 110 to the high-pressure pump 120 via a non-return valve (Rückschlagventil) 115 and a low-pressure line (Niederdruckleitung). The high pressure pump 120 builds up pressure in the high pressure region. In particular, the high-pressure region includes a pressure accumulator, also referred to as a rail (Rail) 130 . In addition, a pressure sensor 140 is arranged in the high pressure region. From the rail 130 fuel is passed through the injector 150 into the combustion chamber of the internal combustion engine. The pressure build-up through the high-pressure pump 120 , the opening and closing of the injector 150 , the power output of the delivery pump 100 is controlled by the control device 160 . This control device 160 also analyzes the output si...

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Abstract

The invention relates to a method for controlling a fuel metering system of an internal combustion engine, wherein the fuel metering system comprises a delivery pump and a high-pressure pump, which boosts the drive signal of the delivery pump at the start of the internal combustion engine, and at least one characteristic feature of the pressure is determined in a high-pressure region.

Description

technical field [0001] The present invention is based on a device and a method according to the preambles of the independent claims. Background technique [0002] A method for controlling a fuel distribution system of an internal combustion engine is known from DE 198 53 823 A1. The fuel distribution system includes a transfer pump and a high pressure pump. The feed pump feeds the fuel from the fuel storage container (Vorratsbehälter) through the low-pressure region to the high-pressure pump. The high-pressure pump delivers fuel into the high-pressure region, which in particular comprises the so-called rail. From the rail, the fuel reaches the injectors (Injektors) of the individual combustion chambers of the internal combustion engine. [0003] In the systems used today in mass production, the fuel distribution system consists of a low-pressure system and a high-pressure system. The low pressure system essentially consists of the delivery pump. The high pressure system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D1/00
CPCF02D1/00F02D41/062F02D41/2438F02D41/3082F02D2200/0602
Inventor A.S.Z.施魏因斯贝格B.希勒H-F.施瓦茨J.金佩尔K.约斯
Owner ROBERT BOSCH GMBH
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