Device for checking fuel injectors and corresponding method

A fuel injector and injection valve technology, which is applied in the field of fuel injector devices, can solve the problem that the fuel injector cannot be inspected, etc., and achieve the effects of reliable and clear identification, simplified application or execution, and reduced wiring complexity.

Active Publication Date: 2016-01-20
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Previously, the fuel injector could not be inspected after manufacture

Method used

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  • Device for checking fuel injectors and corresponding method
  • Device for checking fuel injectors and corresponding method

Examples

Experimental program
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Embodiment Construction

[0020] figure 1 A device for inspecting fuel injectors according to a first embodiment of the invention is shown.

[0021] exist figure 1 The reference numeral 1 in the figure indicates a device for inspecting piezoelectric fuel injectors. The device 1 is connected via a bidirectional interface S to an operating device in the form of a computer C on the one hand. In addition, an energy source 3 for operating the device 1 is connected to the device. The device 1 additionally comprises an outlet 2a designed to be connected to a fuel injector for two fuel injectors 1 1 , I 2 line L 1 mechanically and electrically coded plug 2. Plug 2 and corresponding mating connection 2a together with line L 1 Can be used here to connect piezoelectric and / or electromagnetic fuel injectors I 1 , I 2 . The connection 2 a interacts here with a test module 6 which indirectly detects the corresponding mechanical and electrical coding of the plug 2 and interacts with the microcontroller 5 in...

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Abstract

The invention relates to a device and a method for checking, in particular piezoelectric fuel injectors. The device comprises at least one, in particular bi-directional, connection for connection to an actuating device (C), at least one outlet for connection to at least one fuel injector, at least one integrated switching circuit and a control circuit for controlling the integrated switching circuit Microcontroller, wherein the integrated switching circuit and the microcontroller cooperate in such a way that fuel injectors can be checked according to the type and / or subtype of the fuel injector, said type and / or subtype including at least Piezo types with high activity and low activity subtypes.

Description

technical field [0001] The invention relates to a device for checking, in particular piezoelectric fuel injectors, and a corresponding method for checking fuel injectors. Background technique [0002] Fuel injectors are used, for example, in fuel injection systems in motor vehicles. In order to enable this to be checked during production or otherwise during a subsequent factory stop, correspondingly specially adapted testing devices are used which are correspondingly specially adapted to a specific fuel injector type. Many special types of fuel injectors, such as piezoelectric fuel injectors of the "low activity" subtype, ie piezoelectric fuel injectors such as the following, can in particular only be checked during manufacture and only the corresponding fuel injection Individual components of the injector: In this fuel injector the injection valve is closed when operating voltage is present (fuel injection in the cylinder is interrupted). Previously, the fuel injector cou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M65/00F02D41/20F02M63/00
CPCF02D41/2096F02D41/221F02D41/266F02D2400/22F02M65/00F02M2200/21G01M15/04
Inventor J.弗里德曼J.格泽K-M.库特鲁夫M.福格尔
Owner ROBERT BOSCH GMBH
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