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…
HEUI technology introduction and technical advantages Introduction to HEUI The hydraulically driven electronically controlled unit injector (HEUI, also called medium-pressure common rail injector) fuel system uses engine lubricating oil pressurized to a high pressure to drive the injector plunger to produce high-pressure diesel fuel. technology. This technology is the same as the high-pressure common rail…
Six-cylinder engine diesel pump The high-pressure fuel pump is the main component of the diesel fuel supply system. Its basic function is to provide high-pressure diesel fuel to the injectors regularly and quantitatively. Whether the entire diesel engine can operate normally, the diesel engine high-pressure oil pump plays a vital role. Today, we will…
As a leader in the non-road engine industry, Caterpillar has begun to launch engines that meet the fourth stage in recent years. Today I want to introduce to you the engine of the 349F excavator C13. I believe that many maintenance personnel have seen this engine, and today we will introduce the engine’s fuel system…
Cummins HPI-TP fuel system introduction (Part Three) Maintenance points of HPI-TP injector n the second article of Cummins HPI system introduction, we gave a very detailed introduction to the structure and working principle of HPI injectors. If the working principle of your injector is still unclear, please be sure to return Go to the…
Cummins HPI-TP fuel system introduction (Second article) HPI injector structure and working principle After the introduction of the Cummins HPI-TP integrated fuel supply module in the previous article, everyone should have a good understanding of how fuel is supplied to HPI injectors. The amount of fuel entering the metering cavity and timing cavity of the…
Integrated fuel supply module Dear colleagues in the fuel system maintenance industry, many people are consulting the assembly on how to check and repair Cummins HPI injectors and the corresponding fuel system. After doing a lot of research and practical work, here is the relevant content for everyone, I believe it will help you to…