FIELD: engines and pumps.
SUBSTANCE: invention may be used to run-in, inspect, test and diagnose internal combustion engines (ICE). The method to run-in internal combustion engines consists in cold and hot running-in, inspection, testing and diagnostics. Cold and hot running-in is carried out adaptively. Diagnostic parameters shall be temperature, torque, crankshaft rpm, besides, parameters functionally depend on each other. End of running-in and start of diagnostics is achieved at the moment of above parameters stabilisation. In process of its realisation hot running-in is carried out in stages. At the first stage one cylinder is disconnected from operation, then the second one. Engine loading is provided with capacity of mechanical losses of two cylinders taken out of operation. At the second stage only one cylinder is left in operation, besides, in case of one cylinder operation the engine is loaded with capacity of mechanical losses of three others. At the third stage one cylinder left in operation is loaded, disconnecting working pulses of an electromagnet nozzle (sparks of the ignition system, injections of a diesel engine nozzle), providing at the same time for full opening of a throttling nozzle. Therefore maximum loading of one operating cylinder is provided. Further the procedure is repeated with other cylinders, at the same time mechanical losses are compared at each operating cylinder, providing for proportional loading. In case of high mechanical losses of any cylinder, the loading accent is transferred to this cylinder, providing for running-in until mechanical losses are balanced in all cylinders. Inspection and diagnostics using the specified parameters is carried out with the help of a computer. A bench is disclosed to run-in and diagnose internal combustion engines.
EFFECT: reduced time of running-in process, lower fuel consumption and toxicity of spent gases.
2 cl, 6 dwg
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