How to Handle Difficult Starting of Air-Cooled Diesel Engines?
1 Answers
Methods for addressing difficult starting of air-cooled diesel engines are as follows: 1. Preheating should be performed in low-temperature seasons: The main reason affecting the starting performance of diesel engines during cold starts is the inability to reach the compression ignition temperature of diesel. To address this, hot water can be added to the engine cooling system for preheating, which is an effective way to improve starting performance. 2. Improve the sealing performance of the cylinders: One of the differences between diesel engines and gasoline engines is compression ignition, which requires the cylinders to have high sealing performance. During cold starts, due to the minimal amount of oil on the piston rings and cylinder walls, the sealing effect is poor, resulting in repeated starting attempts without successful ignition. Sometimes, severe cylinder wear significantly affects the sealing performance, making starting even more difficult. 3. Remove air from the fuel system: Loosen the air bleed screw on the high-pressure fuel pump and use the hand pump to expel all air from the high-pressure fuel lines. After purging air from the high-pressure fuel lines, loosen the fuel pipe connections on each injector, set the throttle to the maximum fuel supply position, and crank the engine until fuel flows steadily from each injector's fuel pipe connection.
