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Device for testing fuel injectors, and corresponding method

A fuel injector and control device technology, which is applied in the field of fuel injector devices, can solve the problems that fuel injectors cannot be inspected, and achieve the effects of reliable and clear identification, simplified application or execution, and reduced wiring complexity

Active Publication Date: 2013-01-30
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 testing fuel injectors, and corresponding method
  • Device for testing fuel injectors, and corresponding method

Examples

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Embodiment Construction

[0020] FIG. 1 shows an apparatus for inspecting a fuel injector according to a first embodiment of the present invention.

[0021] Reference numeral 1 in FIG. 1 designates a device for checking 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 order to check th...

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PUM

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Abstract

The invention relates to a device and a method for testing fuel injectors, in particular of the piezoelectric type. The device comprises at least one, in particular bidirectional, interface for connecting an operating unit, at least one outlet for connecting at least one fuel injector, at least one integrated circuit and a microcontroller for controlling the integrated circuit, wherein the integrated circuit and the microcontroller interact in such a way that the fuel injector can be tested as a function of its type and / or subtype, comprising at least the type piezoelectric with subtypes active high and active low.

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 (Aktiv low)" subtype, ie piezoelectric fuel injectors such as the following, can in particular only be checked at the time of manufacture and only for the corresponding fuel Individual components of the injector: In this fuel injector the injection valve closes when the operating voltage is present (fuel injection in the cylinder is interrupted). Previously, the fu...

Claims

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Application Information

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IPC IPC(8): F02M65/00F02D41/20F02M63/00
CPCF02D41/266G01M15/04F02M65/00F02D2400/22F02D41/2096F02D41/221F02M2200/21
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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