digital tachometer for boats

• 2022-04-24

General marine engines belong to the category of low-speed engines. The speed of the engine is generally below 800rpm (except for special speed boats), because the marine engine needs to be matched with the propeller, and the speed of the propeller is about 600-800rpm. Considering the matching efficiency value, too high engine speed is not beneficial. In addition, some large cargo ships or cruise ships use engines that burn heavy oil (the worst oil). Such engines are generally two-stroke low-speed engines. Of course, there are also high-power four stroke medium speed engines. Medium speed engines are generally used as auxiliary engines on board to generate electricity.

1.After the diesel engine is started, it shall be warmed up. The load operation can be gradually increased only after the outlet temperature of fresh water and oil reaches 35 ~ 40 ℃. The time to reach full load shall be 15 ~ 20 minutes, and shall not be less than 5 minutes in case of emergency. 2. The new diesel engine, the replaced main parts or the repaired diesel engine must be operated at 25% and 50% load for 2~3 hours before it can be loaded to the rated power. After the first start, the engine shall be stopped for 0.5~1 hour and the crankcase door cover shall be opened to check the condition of all moving parts and main bearing bolts. 3. During the operation of the diesel engine, you must pay attention to the instrument reading and the working condition of the machine at any time, and make records on time. 4. When the diesel engine works normally, the speed should not exceed the specified speed value. When it is used as a marine main engine, the diesel engine may be overloaded when the hull is attached with marine organisms and the hull turns. At this time, the speed should be reduced appropriately according to the exhaust temperature.

Because there is a certain power interruption in the process of downshifting or shifting, this visual impact will occur. But this phenomenon is normal. If in neutral. The pointer of one foot of floor oil is stuck. If such a problem occurs, it is recommended that you go to the repair shop or the fourth s shop for inspection. The fall of the boats digital tachometer is related to the force of releasing the accelerator pedal and braking. If you suddenly release the accelerator pedal and press the brake, the pointer will fall back quickly. However, if the accelerator pedal is released slowly and there is no other operation, the pointer must fall back slowly.