Variable Altitude Control Strategy for Variable Flow Cooling System of Diesel Engine
A cooling system and control strategy technology, applied in the direction of coolant flow control, engine cooling, measuring devices, etc., can solve the problems of unsatisfied control accuracy and insufficient heat dissipation requirements of diesel engines at variable altitudes
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[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0015] like figure 1 As shown, a diesel engine variable flow cooling system variable altitude control strategy applies variable universe fuzzy control technology, in which the input language variable of the variable universe fuzzy controller selects the deviation between the actual coolant temperature and the target temperature e=T e -T ed and its rate of change The output is the opening increment of the proportional overflow valve of the cooling fan, the opening increment of the thermostat and the speed increment of the cooling water pump u. On the basis of the basic fuzzy control domain (initial domain) [-E, E], adding expansion factor α(x), the initial domain [-E, E] changes to...
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