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- W647133029 abstract "FOR A TOTAL OF 50 GOODS VEHICLES WITH COMPRESSED AIR BRAKES CHARACTERISTIC CURVES OF BRAKING FORCES WERE ESTABLISHED ON BRAKE TEST STANDS. BY WAY OF MEASUREMENTS ON NEW VEHICLES AND THOSE OF THE SAME TYPE IN SERVICE, THE TRAFFIC CONDITIONED INFLUENCE COULD BE ESTABLISHED, I.E. A DECREASE OR AN INCREASE IN BRAKING FORCES. ONLY 10% OF THE MEASURED VEHICLES AT ANY GIVEN TIME SHOWED A FALL IN THE BRAKING FORCE WHICH WAS GREATER THAN -21% COMPARED WITH NEW VEHICLES AND A RISE WHICH WAS GREATER THAN +26%. CONTRARY TO EARLIER OPINIONS, THE BEHAVIOUR OF BRAKES, WHEN RELATED TO THE AVERAGE VALUE OF ALL MEASURED VEHICLES, HAS NOT DETERIORATED IN SERVICE COMPARED WITH THEIR CONDITION WHEN NEW. THE ESTABLISHED PERMISSIBLE BRAKING FORCE DEVIATIONS WERE HOWEVER HIGHER, AND THEY AMOUNTED TO -30% TO -55% IN RELATION TO THEIR NEW CONDITION. IT APPEARS NECESSARY THEREFORE TO ADAPT THE TEST METHODS TO THE PRESENT STATE OF TECHNOLOGY. BASED ON THESE RESULTS A SUPPLEMENT TO THE EXISTING TEST PROCEDURE FOR TRACTION VEHICLES HAS BEEN SUGGESTED, WHEREBY THE MEASURED BRAKING FORCES DURING TYPE TESTING ON THE TEST STAND FOR CERTAIN SET PRESSURES ARE USED AS REFERENCE VALUES FOR THE ASSESSMENT OF BRAKING FORCES DURING A BATCH INVESTIGATION." @default.
- W647133029 created "2016-06-24" @default.
- W647133029 creator A5018872924 @default.
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- W647133029 date "1977-01-01" @default.
- W647133029 modified "2023-09-26" @default.
- W647133029 title "COMPARATIVE INVESTIGATIONS OF CHARACTERISTIC CURVES FOR BRAKING FORCES OF NEW AND IN-SERVICE VEHICLES WITH AIR BRAKES" @default.
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