In the paper,based on the hypothesis of noise sources distribution on the surface of the car,identification of exterior noise sources of a passenger car running at high speed is carried out with the planar cross array technolo gy.
This paper will discuss the new development about this technology which is more and more used in high speed reciprocated engine (gasoline and diesel engine )for passenger car in industrialized countries .
In the work of SC7080A mini-car noise reduction project, at first time the separate-running method was applied to identify the noise source, and successfully separated and ranked the contribution of the main assemblies of SC7080A to the whole of accelerating noise, and recognized the greatest one is the noise of fuel combustion in engine.
The pyrolysis of rubber from the sidewall and tread of a passenger car tire was carried out in a nitrogen flow at a wide range of final temperatures.
Internal structure of carbon black produced by pyrolysis (CBp) of rubber samples from the top and bottom parts of sidewall and tread of a passenger car tire was investigated in nitrogen flow at different temperatures.
Herein, we present a methodology for the measurement of the cumulative pollutant emissions during the starting phase of passenger car DI Diesel engines, with the goal of overcoming this limitation by taking advantage of standard detectors.
The subject of the research was a collision of a pedestrian and a passenger car.
The findings show that children are generally well protected when properly restrained in a child seat in the rear seat of a passenger car.
With modern experiments and signal analysis techniques, the sources of rcar seat noise of a car are successfully identified. According to the results of the identification, the car design is modified, and the noise level is ameliorated.
In this paper the principle to find abnormal intersecting curve equation between two pipes for automatic welding tracking with numeral fitting method has been suggested.As an example,the intersecting curve e- quation for exhaust pipe of SANTANA car has been found.