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Modulator mis-wire test device and method

A modulator, solenoid technology, applied in the field of monitoring and testing of electronically controlled braking systems, to achieve the effect of reducing the possibility of wiring errors

Inactive Publication Date: 2005-09-07
BENDIX COMML VEHICLE SYST LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This difference in timing or exhaust sound is not sufficient to reliably identify a miswired modulator when testing

Method used

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  • Modulator mis-wire test device and method
  • Modulator mis-wire test device and method
  • Modulator mis-wire test device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Such as figure 1 As shown, a pneumatic braking system generally indicated by reference numeral 10 includes a right front wheel 12 and its brake actuator 14, a left front wheel 16 and its brake actuator 18, and a pair of rear axle assemblies. Includes right rear wheels 20, 22, left rear wheels 24, 26 and their dual brake actuators 28, 30, 32 and 34. The system 10 also includes an operator actuated brake valve 36 having a pedal 38 actuated by the vehicle operator. When pedal 38 is depressed, valve 36 communicates inlet port 40 with outlet port 42 and simultaneously connects inlet port 44 with outlet port 46 in a manner known to those skilled in the art. System 10 also includes a source of air pressure, such as tank 48, which is charged by an air compressor powered by the vehicle engine (not shown). The air inlet 44 communicates with a source of air pressure 48, although these connections are not shown in the drawings for clarity. The air outlet 46 communicates with the...

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PUM

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Abstract

A testing system and method are provided for an electronically controlled braking system (10) to determine whether the solenoids of each of the modulators (52, 54, 66, 68) are properly wired. According to the test, each modulator (52, 54, 66, 68) is tested in sequence. The exhaust solenoid of the modulator (52, 54, 66, 68) is actuated multiple times and the hold solenoid of a modulator is actuated once. Discrete signals will prove whether the modulator solenoids have been properly wired.

Description

technical field [0001] The present invention relates to the monitoring and testing of the braking system of automobiles, in particular to the monitoring and testing of electronically controlled braking systems of automobiles equipped with pneumatic brakes, so as to determine whether the wiring of the modulator of the braking system is wrong. Although the present invention is used in adaptive braking systems, it can also be used in other electronically controlled braking systems such as electro-pneumatic braking systems. Background technique [0002] Generally speaking, the driver must determine whether the braking system of the car is working properly at all times. Therefore, when the car is started, a series of checks are usually performed to ensure that the electronically controlled braking system is working properly. One inspection involves the solenoids of the brake pressure modulator and the circuits that operate the valves and selectively contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/02B60T8/36B60T8/88B60T8/90B60T13/68B60T17/22G01M17/007
CPCB60T2270/415B60T8/885B60T2270/406B60T8/3605B60T17/221B60T8/90B60T13/683
Inventor C·S·海恩K·格罗勒C·E·罗斯
Owner BENDIX COMML VEHICLE SYST LLC