METHOD EVALUATING RESIDUAL LIFE OF DIESEL ENGINE Russian patent published in 2001 - IPC

FIELD: equipment diagnosing Diesel engines. SUBSTANCE: invention makes it feasible to evaluate residual life of Diesel engine without considerable expenditure of time and labor under conditions of its running, during maintenance or routine repair. Value t_k of running of Diesel engine from start of operation or from overhaul is recorded and smoke density N_t of exhaust gases of Diesel engine corresponding to recorded running is measured at maximum no-load speed of engine or under condition of maximum power at rated speed of rotation of crankshaft or under condition of free acceleration. Specific consumption q_t of fuel by Diesel engine for moment of test is found by value of measured smoke density with use of dependence q_t= K(N_t-N_н)+q_н, where K is coefficient depending on type of Diesel engine and conditions of its running; N_t is measured smoke density of exhaust gases; N_н is rated value of smoke density of exhaust gases; q_н is rated value of specific consumption of fuel. Value t_res of residual life of Diesel engine is determined by dependence where q_п is limit value of specific consumption of fuel; a is index of power of function. EFFECT: evaluation of residual life of Diesel engine without considerable expenditure of time and labor. 1 cl