What is high pressure common rail? High-pressure common rail technology refers to a fuel supply method that completely separates the generation of injection pressure and the injection process in a closed-loop system composed of high-pressure fuel pumps, pressure sensors and ECUs. The high-pressure fuel pump delivers high-pressure fuel to the public fuel supply. Through precise…
Hino P11C, Hino J08E, Nissan MD9M Denso System Diagnosis location: inside the relay box, above the accelerator pedal, near the instrument panel, etc.; Diagnosis seat shape and configuration: 1. Round 16PIN->use AK-33; Configuration: power cord (1), ground wire (1), signal wire (1, 8th position); Note: Pay attention to the difference between WABCO’s ABS diagnostic interface…
The needle valve of the fuel injector burns to death The phenomenon that the needle valve of the fuel injector burns to death is that when the engine is working, when the pressure regulating screw on the fuel injector is tightened or loosened, the working condition of the engine does not change. In addition, due…
one. characteristics and general rules of car wiring Generally, a single-wire system, parallel connection of electrical equipment, grounding of the negative electrode, and lines with different colors and numbers are used to distinguish the lines, and are divided into several main lines with the ignition switch as the center. 1. Battery positive wire: lead through…
With the implementation of emission standards across the country, as an important technical means to achieve emissions, electronically controlled fuel injection technology has entered people’s attention. Today, engines with electronically controlled fuel injection technology have been on the market for a long time. In daily life, many people are accustomed to calling electronically controlled engines…
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. ⑴ The reason for the lack of engine power and continuous black smoke discharge is that most or…
Sensors on electronically controlled diesel engines can be described as diverse, roughly divided into three types: pressure sensors, temperature sensors, speed and position sensors. There are about ten types of subdivisions. Today, I will introduce most of the necessary sensors for electronically controlled diesel engines. 1.Crankshaft speed sensor Installation location: on the flywheel housing, next…
ABS system 1. Comet ABS Diagnosis location: behind the driver, above the relay box, etc.; Diagnosis seat shape and configuration: 1. Flat three-pin -> AK-35 is recommended; Configuration: power supply (1), ground wire (1), signal wire (2); Diagnostic line identification method: 1. Special mark: One of the signal lines is between -9V ~ -5V; 2.There…
Natural gas system: 1) Yuchai Natural Gas Diagnosis 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: 1. Square 4-pin ->AK-46; Configuration: power cord (1), ground wire (1 or), signal wire (2); Diagnostic line…
The phenomenon of diesel engine runaway is the phenomenon of diesel engine running, especially in the process of small and medium load operation, due to some reasons, the diesel engine speed increases sharply, overspeeding without automatic control, exhaust smoke, sound and vibration. After the occurrence of “speeding”, as the speed of the diesel engine increases,…