The 24 volt battery cannot start if it is below 12 volts. Indeed, a significant current is necessary to start the vehicle and the starting voltage must be greater than the minimum. Voltage when the computer is running. If the battery is below 12 volts, it is in a power loss state. It cannot send a large current in an instant. When starting, the voltage is lower than the minimum voltage for computer operation, so the vehicle cannot start. . If the battery is exhausted and the vehicle cannot start, the engine cannot start, and the battery cannot be charged, temporary measures can be taken to resolve the problem. If you want to know if the battery is exhausted, you can see if it lights up on the car dashboard. You can also use the battery from other vehicles to start the car. Just askhelp other vehicles, then connect the negative terminals of the batteries of both cars to the negative terminals and the positive terminals to the positive terminals.
Diesel engines generally use 24 V, and diesel engines operate by spontaneous combustion and explosion at high pressure and require high RPMs. The function of the cutoff relay is to prevent electricity from the battery from flowing back to the generator and burning the generator coil when the engine is off. For example, if a high power 12V motor is too big. 12V diesel engines have poor starting performance at low temperatures and are generally only used in small-power diesel engines.
The ignition methods of gasoline engines and diesel engines are different. It is not necessary to use 24v to start with a low power starter. Currently, gasoline engines do not have 24 Vand the use of decelerating starters resolves this shortcoming. The function of the current limiter is to keep the average value of the current produced by the generator constant. The diesel engine is 12 V. Both the current limiter and the cut-off relay operate according to the electromagnetic principle. The gasoline engine ignites the combustible mixture via the spark plug to explode and do work, so it does not require high speed.