Diagnosing motor vehicle chassis systems – development trends

Abstract: The technical condition assessment of basic motor vehicle chassis systems is currently performed using diagnostic lines. The paper presents the types, structure, and technical characteristics of new variants of diagnostic lines from selected manufacturers. The scope of tests possible to perform on these devices is also described. The principles for positioning measuring devices at the inspection station of a diagnostic center are provided. A review of the development trends of these devices was also conducted, focusing on: motorcycle, segmental, universal, double, mobile, and chassis dynamometer lines.1. INSTALLATION OF DIAGNOSTIC LINES AT THE STATION
The scope of diagnosing motor vehicle chassis includes determining the technical condition of the following systems: powertrain, running gear, suspension, steering, and braking. Basic parameters characterizing the state of the powertrain (e.g., power at the drive wheels, coast-down distance) can be tested on chassis dynamometers.
The assessment of the technical condition of other chassis systems is currently most often performed using control devices included in diagnostic lines.
The most common variants of diagnostic lines are: for testing passenger cars, for testing heavy-duty vehicles, and universal lines.
Manufacturers of diagnostic lines offer various possibilities for setting up measuring devices at the vehicle inspection station. In the case of passenger car lines, the following installation variants are used [6]:
• in the floor in recesses for control devices, • on a drive-on ramp placed on the station floor, • on the edges of the inspection pit. (…)

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