Friday, July 8, 2011

Knowledge Lecture why winter fuel consumption higher than in summer

To understand the reasons, the first principle from the start with the engine cooling. Needs engine work, a normal temperature environment (80 to 90). If the temperature is too high, the engine cooling system can automatically change the cooling water circulation, increase the heat, remove excess heat; Conversely, reducing the cooling water circulation to maintain the necessary temperature. To achieve changes in main components of automatic cycle is the engine temperature sensor sensor, thermostat valve thermostat and magnetic fan.
Cold starts, the magnetic fan is stopped, the thermostat valve is also in the off state, the engine coolant in the engine water jacket only in small cycles, easy to heat, while the computer by the temperature sensor of the temperature index effect will be issued to increase fuel injection, increase the idle valve opening instruction to improve the engine speed, will help allow the engine to heat up quickly; temperature is normal, fuel injection and idle speed valve opening are back to normal. When the temperature exceeds 80 to 90 degrees (each car is slightly different), the thermostat valve is opened, the engine water jacket inside the coolant flowing through the radiator through the radiator thermostat valve big loop through the traffic generated by the air flow away a lot of calories to maintain the normal coolant temperature. If speed is not slow or even stop, but turn off, there is no flow of air to help heat the engine will quickly heat up, then give directions to the magnetic sensor to help start the radiator cooling fan.
Winter, the engine is warm and not need heat! Winter due to the impact of air flow, engine temperature is not easy to remain at 80 to 90 degrees, the engine will increase the amount of fuel injection and ignition advance angle changes to maintain the temperature, the thermal efficiency of gasoline at the same time much less than the hot days. In addition, in order to maintain the normal speed you will unwittingly increase the throttle opening. These will increase fuel consumption.
Come to talk about whether the costs to open hot oil problem. The answer is yes - open hot air definitely increase fuel consumption!
In order to maintain the temperature of the engine in winter, mostly in small cycles; and when you open the hot air, the cold air rapidly flowing through the heater core inside the surface, is actually cooling for the engine to increase an efficient circulatory system inside the radiator! Its role can be imagined.
All in all, winter is certainly higher fuel consumption than usual, even more than the summer air conditioning is also high; hot air to open a more wide open than increasing it.

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