Method for measuring vehicle motion resistances using short dist

Details Method for measuring vehicle motion resistances using short dist Method for measuring vehicle motion resistances using short dist

1996-02-06

1997-11-11

Raevis, Robert

Measuring and testing

Frictional resistance, coefficient or characteristics

G01N 356

Patent

active

056866518

ABSTRACT:
The present invention is related to a method for measuring vehicle motion resistances using the vehicle coast-down testing method. More specifically, the initial coast-down speed of the vehicle is divided into a low speed range and a high speed range. Each range is tested to obtain physically meaningful test variables for each range. By combining the obtained variables, the length of the test road required for previous coast-down test methods can be significantly reduced. Additionally, vehicle motion resistances may be more accurately measured and analyzed.

REFERENCES:
patent: 4003241 (1977-01-01), Thomas
patent: 5101660 (1992-04-01), La Belle
Bestimmung der Fahrwiderstande im Fahrversuch (Quantifying Resistance in Road Tests); Automobiltechnische Zeitschrift 86 (1984) 4; Gustav Stask; pp. 175-180.
Road Load Measurement and Dynamometer Simulation Using Coastdown Techniques; Society of Automotive Engineers, Inc.; 1981; C.E. Chapin, General Motors.

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