Will the work of vehicle electrical equipment increase fuel consumption?
Many drivers are not very clear about whether vehicle electrical equipment will increase fuel consumption when working, and a considerable number of drivers will think that electricity is electricity and oil is oil, and electrical equipment will not increase fuel consumption. But in fact, it can be known from the law of conservation of energy in physics that no energy can be produced out of thin air.CarThe electrical energy consumed by electrical appliances is actually converted from the chemical energy in gasoline by the engine.On the road, we can often see that some drivers turn on some electrical equipment when they are not necessary, such as front and rearFog lights. Some drivers have to turn on the fog lights when turning on the headlights at night. The dazzling fog lights not only affect the driving safety of other vehicles, but also waste their own fuel, which can be described as absolutely "harmful to others". Another example is the electric heating and defrosting of the rear window, which consumes about one liter of gasoline when it is turned on for one hour.
Why does the EPC light turn on?
EPC, many people call it electronicThrottle, But according to the literal translation of the original text, it should be called an electronic power control system.The system consists of someSensor, Controller and other components.WhenSensorWhen a fault occurs or an abnormal situation is sensed, the control system will take corresponding measures according to the set program.Give an example of this type of failure: for example, we are accelerating, and the control unit senses the knotValveIs in an open state.At this time due to the brake lightSwitchThe fault caused the control unit to receive a brake signal from a brake light switch. According to the program, the control unit should reduce the fuel injection time and reduce the power output of the engine. But at this time, the control unit also receives the throttle acceleration request signal, and the computer believes that these two signals contradict each other.
When the control unit is unable to accurately determine the cause of the failure, it will first light up the EPC lamp to alert the user to check. From this point of view, EPC lights are somewhat similar to failure warning lights or engine "CHECK" lights that are more common in American cars.
How to help the maintenance personnel accurately diagnose the fault of the car?
When it comes to this problem, you may find it strange. It is the maintenance technician's business to correctly diagnose and troubleshoot. What does it matter to me? Indeed, since the user does not have a wealth of professional knowledge, the diagnosis process does seem to be irrelevant to the user. However, accurate and objective descriptions of vehicle faults are indeed helpful for fault diagnosis. Some users lack communication with maintenance technicians, and fail to jointly test and confirm the fault point, which may cause detours in maintenance. The user is always the most sensitive to the vehicle.
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