Used Sinotruk Howo 375hp Dump Truck

Product Description

Howo dump truck electronically controlled engine fuel injection is the engine Ecu according to the sensor and switch signals by precise calculation and output control signals to control the injector, so one of the advantages of electronically controlled engine is low fuel consumption. Causes of fuel consumption are: sensor or switch signal error, excessive fuel pressure or injector failure, ignition system failure, engine mechanical component failure.

1)Determine whether the fault is indeed a large fuel consumption caused by engine failure. Driver’s poor driving habits, tire pressure is too low, the vehicle load is too large, brake drag, driveline slippage, automatic transmission can not be upgraded to high gear, torque converter without locking, etc. will lead to excessive fuel consumption.

2)Check whether the engine is still obvious fault phenomena, such as black smoke, lack of power, poor acceleration. Any faults that cause insufficient power, too thick a mixture, and too low a coolant temperature will lead to excessive engine fuel consumption. High engine idle speed is also one of the reasons for excessive fuel consumption. Thick mixture will not lead to power loss, on the contrary, the power may be slightly increased, but Howo dump truck engine mixture is not too thick mixture is not too thin sensitive, some people are difficult to detect, unless too thick to the point that the exhaust smoke. To check whether the mixture is too thick, it is best to use an exhaust gas analyzer. Of course, disassembling the spark plug is also a simple and feasible method.

(3) The so-called short-term fuel correction factor is the degree of short-term correction of the engine computer of Howo dump truck to the controlled mixture concentration. The oxygen sensor detects the mixture concentration, and the computer increases or decreases the degree of control of fuel injection to express the way of fuel correction coefficient. If the computer finds that the fuel short-term correction coefficient has been too large or too small for a period of time, it will increase or decrease the fuel long-term correction coefficient accordingly, which indicates that the computer has been controlling the engine’s operation according to a richer or thinner mixture for a period of time. At this point, the short-term fuel correction factor of the Howo dump truck returns to an intermediate value.