FIELD: engines.
SUBSTANCE: invention relates to internal combustion engines, particularly, to engine warm-up. Disclosed is method of fluid warm-up supplied by pump (10) to vehicle (1) engine (5), if liquid temperature is low and reduces engine (5) operating efficiency. Method includes increasing losses for pumping, if necessary to warm-up liquid, if vehicle (1) movement deceleration occurs. To increase losses for pumping in order to produce heat on liquid passing through pump (10), limitation of liquid supply from pump (10) is created using flow control valve (12), or reducing pump efficiency (10), thus changing pump (10) layout or adjustment. In preferred version of invention, liquid pre-heating is performed only in case of vehicle (1) working brakes (50) actuation.
EFFECT: invention provides faster engine coolant heating, fuel saving and reduces emissions.
15 cl, 3 dwg
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