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One multi-stage windshield wiper
windscreen wiper is an important safety element, it must be able to effectively remove rain water, snow and dirt; to 80 degrees (zero Celsius temperature ) and low temperature (-30 ° C) work; to acid, alkali, salt corrosion and other harmful substances; service life of 150,000 cycles wiping (passenger cars). Generally there wiper control knob, with low speed, high speed, intermittent gear 3 on an automobile combination switch lever. Scrubber is the top handle push switch, press the switch discharge wash water, washed with windshield wiper. Car wash systems are now very common device, which consists of the storage tanks, pumps, pipes, nozzles spray composition. Wherein the tank is generally 1.5 liters to 2-liter plastic pot, electric water pump is a miniature pump, the washing water spray nozzle will lose water through the tank, the pressing action by the water jet nozzles 2 to 4 will washed with water jet injection into tiny windshield, the wiper blade with the functions of the windshield clean.