Today I am going to talk about hydrogen fuel. So what will the topic of hydrogen fuel be so hot in the last two years? The background is that in December 2020, Chinese President Xi Jinping delivered an important speech at the Paris Climate Summit and announced a series of independent contributions from China. New…
Common maintenance methods for electronically controlled diesel engines 1. First outside and then inside When the engine malfunctions, first check the possible malfunctioning parts other than the electronic control system. This can avoid a fault that is not related to the electronic control system, but the system’s sensors, computers, actuators, and wiring are complicated and…
Injector total oil return test Detection Tool Fuel return hose (part number 3164618) 2 open wrenches (17# and 19#) Measuring cylinder (100ml range) Torque wrench (with 22# fork head) INLINE (INSITE is a kind) Computer with INSITE service software Barrels for collecting fuel Steps Install the oil return hose Use a wrench (19#) to remove…
1) Yuchai unit pump R01/R02 Diagnostic location: in front of the co-pilot/in the relay box/near ECU/above the accelerator pedal/near the instrument panel/in the fuse box near the left front wheel, etc.; Diagnosis seat shape and configuration: Shape: Flat 4-pin -> AK-35 is recommended; Configuration: power cord (1), ground wire (1 or), signal wire (2); Note:…
The common rail injection system of diesel engines has a common feature, that is, there is a common high-pressure fuel accumulator, called common rail. The high-pressure fuel supply pump is only responsible for supplying high-pressure fuel to this accumulator, and is not responsible for controlling fuel quantitative and injection timing. The task of managing fuel…
In the TICS fuel injection pump electronic control system, ECU (engine control unit) has a fault self-diagnosis function, which can detect the working conditions of each part of the control system. When the ECU detects the fault signals from the sensors and actuators, it immediately lights up the “CHECKENGINE” (check engine, also called fault self-diagnostic…
Fault code: SFC 161 Fault description: XDRP_A (5V) voltage is high The 5V external supply voltage is the power source for many sensors and components in the system. Whether this voltage is stable or not seriously affects the accuracy of the sensor, so it is often monitored by the ECU. The ECU can determine whether…
There are two phenomena of insufficient engine power, uneven speed, and thick black smoke from the exhaust pipe: One is continuous exhaust of black smoke; the other is intermittent exhaust of black smoke, and the engine shakes. ⑴The reason for the lack of engine power and continuous black smoke discharge is that most or all…
Key points for troubleshooting of injector blockage: 1. No fault code or fault code content has nothing to do with the injector; 2. The rail pressure can reach above 25MPa when starting; 3. There is a pulse voltage signal in the injector circuit. Key points for troubleshooting of injector jams: 1. No fault code or…
Common faults and solutions of fuel injectors The fuel injector is a precision device with very high precision (the most precise of which is the most precise needle valve and needle valve body), which mainly accepts the fuel injection pulse signal sent by the ECU, and precisely controls the fuel injection volume. Generally, fuel injectors…