Automatic diagnostic station for automobiles

Claim 1

An automatic station for all-round diagnosing of the technical conditions of automobiles, comprising dynamometer stands; rotatable race drums on said stands, on which drums the wheels of the automobile being diagnosed are supported; electric motors with liquid rheostats in each of said stands for driving and braking said race drums; a control panel of said station; indicating and recording instruments on said control panel; actuating means electrically connected with said control panel and serving in conjunction with said dynamometer stands for bringing into operative condition the units and components of the automobiles being diagnosed; a control and measuring system comprising means for measuring the residual and service pressure in the hydraulic brake system of the automobiles; in said means for measuring the residual and service pressure, pickups for the residual and service pressure and a pipe union with a non-return valve connected to the brake pipeline of the automobile and to said pickups for the residual and service pressure, and further means included in said control and measuring system for individual diagnosing of the air brake system of the automobile; warning devices and pickups of said means for diagnosing the air brake system connected to a receiver, brake chambers and an automobile-to-trailer coupling member of the same automobile; electric stop-watches, pressure indicators and warning devices of said means for diagnosing the air brake system of automobiles mounted on said control panel and connected by means of relays to said warning device and pressure pickups; means included in said control and measuring system for measuring the temperature difference between the top and bottom tanks of the radiator of the automobile; a pipeline in said means for measuring the temperature difference serving for connecting said top tank, in which a temperature pickup is arranged, with aid bottom tank of the radiator; a pump in said means for measuring the temperature difference serving to circulate liquid in said pipeline from said bottom tank to said top tank of the radiator; a temperature pickup built in said pipeline at the end of said pipeline which is connected to said bottom tank; means included in said control and measuring system for determining slipping of the automobile clutch, including a stroboscopic device mounted on one of said dynamometer stands; a pickup of the same means mounted on an ignition plug of the engine of the automobile being diagnosed and electrically connected with said stroboscopic device; a lamp of said stroboscopic device directed onto the propeller shaft of the automobile being diagnosed; means for maintaining the diagnosing conditions, comprising electronic regulators comparing predetermined signals from said control panel with the electric signals of the pickups mounted on said dynamometer stands and engine of the automobile, transmitted via electrical coupling units, said means for maintaining the diagnosing conditions being electrically connected with said actuating means.