Whether the car is ignited directly when it is started or when it is powered on first and then ignit

Power on first, then fire. Let the oil pump start to work, and provide the car with oil pressure in advance, so as to facilitate the smooth start of the engine.

When the car starts, the computer module has a self-test process, open the ignition key, each computer module will send a signal to the sensor, and the sensor will give the computer module a feedback message, proving that the sensor can work normally, and the communication of each line is also smooth.

At this time, the phenomenon seen on the instrument is that all the fault lights are lit, and the pointers on the instrument of some cars will also swing around.

If everything is normal after the self-test, the fault light will be extinguished, and if an abnormality is found, then the fault light will always be on, and it will also be on after the fire, the purpose is to prompt the driver to go for maintenance.

Extended Material: Considerations.

1. Maintenance of automobile engine.

The engine of the car should be cleaned at the right time. Because prolonged use will form a thick layer of carbon deposits on the surface of the engine.

As a result, the rubber parts in the engine are subject to greater corrosion.

Second, gasoline and water are both.

To prevent evaporation.

In summer, the temperature is generally high. So both gasoline and water evaporate more easily than usual. Because the water tank and fuel tank should be checked frequently, and when the gasoline and water are relatively small, they should be added in time.

3. Pay attention to hygiene inside the car.

Summer is the season when bacteria grow the fastest, so keep the interior of your car clean, especially car seat cushions, car steering wheel covers, and car floor mats that are prone to dirt.

Fourth, the car wiper should be replaced.

When driving in rainy days, you must pay attention to whether the wipers are good, the eraser leaves on the wipers for a long time will age, in order to drive in rainy days to have a better driving sight, the car wipers are best replaced once in one to two years.

Fifth, the car mat should be updated.

A good car mat is an important choice for car sun protection in the hot season. Choose a mat that is cool and not too slippery. In order to avoid traffic accidents caused by body sliding while driving.

Sixth, the car body should also be maintained.

Ultraviolet. The damage to the car is also great, such as the penetration effect on the car paint.

You may notice that after a long period of sunlight exposure to a white car, the color of the body becomes significantly lighter and yellower.

Therefore, in the summer, it is necessary to wax and glaze the car.

It can play a role in protecting your car.

The above content reference: Encyclopedia - Car Maintenance.

Let the car be powered on for self-test first, and then start the car after the self-test is completed, but now there are more models that start with one button, and they are generally started directly.

After the car is turned off, not only the oil will slowly fall, but the fuel will also be like this, at this time, the oil pressure in the oil circuit will drop, and when the car self-inspection car is energized, the fuel pump will instantly supply oil to the oil circuit, and reach a certain oil pressure under the detection of the oil pressure sensor. The purpose of this is to be able to start the engine smoothly.

Requirements for automotive ignition systems.

1. It can generate a voltage sufficient to break through the spark plug gap.

The voltage required for the spark plug electrode to break down and generate a spark is called the breakdown voltage. The secondary voltage generated by the ignition system must be higher than the breakdown voltage in order for the spark plug to skip fire.

2. The spark should have enough energy.

When the engine is working normally, only 1 5 mJ of spark energy is required because the temperature at the end of the mixture compression is close to its autoignition temperature. However, when the mixture is too thick or too thin, when the engine starts, idles or opens the throttle sharply, a high spark energy is required.

3. The ignition time should be adapted to the working condition of the engine.

First of all, the ignition system should be ignited in the order in which the engines work. Secondly, ignition must be carried out at the most favorable moment.

Power on first, let the oil pump start working, and provide an oil pressure to the car in advance, so as to facilitate the smooth start of the engine.

The fuel pump is started after the power is turned on, which refers to the fuel pump.

After the car is turned off, not only the oil will slowly fall, but the fuel will also be like this, at this time, the oil pressure in the oil circuit will drop (here mainly refers to the long stop, the short stop does not have the problem of oil pressure reduction), and when the car self-test car is energized, the fuel pump will instantly supply oil to the oil circuit, and reach a certain oil pressure under the detection of the oil pressure sensor.

The purpose of this is to be able to start the engine smoothly, and the owner of the car during the car self-inspection, if you listen carefully, you can also hear the sound of the oil pump pressurization from the chassis of the car, and if your car is well insulated, it may not be heard.

When the car starts, it is powered on first and then ignited.

1. First turn on the electric oil pump relay to start supplying oil to the engine, airbag self-test, engine fault lamp self-test, oil lamp self-test, water temperature self-test lamp.

2. It can be easily ignited after the self-test is over.

If it is ignited directly, it is easy to cause difficulty in starting, because the oil pump does not start working.

Hello. It is better to power on first and then start it is more appropriate. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

This must be ignited after the power is turned on, and there is no way to ignite it if it is not powered on first. Hope mine can help you! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, theoretically it was energized first, but that was an instantaneous thing! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Electricity can be ignited, and spark plugs must be energized to have electric sparks.

Hello, first power on the ignition [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Not sure what you're asking? Ignition is based on electric energy, and it can't be ignited without electricity, [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello car owners! According to your description, if the lights in the house are not turned on, the switch will be on or on! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

The electrical energy of the ignition system when the engine is running is provided by the generator.

The electrical energy of the ignition system when the engine is running is provided by the generator. The battery is mainly used to start the engine and provide the necessary power guarantee when the engine is turned off. Generators are still the main part of the car's operation.

The ECU controls the high-voltage coil to supply power to the spark plug for ignition, and the ECU determines the ignition time according to the signals of various sensors, and all these electrical equipment uses generator electricity.

Precautions for Car Generators:

The automobile generator is directly connected to the engine, and the engine speed fluctuates greatly, if you use an ordinary generator, the output voltage of the generator will become very large as the engine speed rises, which is enough to burn the on-board electrical appliances.

Therefore, the car generator is very special, when the car key is screwed in the ON position, the battery will first pass an excitation current to the generator to make the generator coil produce a magnetic field, and then the engine rotates with the generator to generate electricity, and when the engine speed rises, the voltage regulator of the generator will reduce the excitation current to keep the voltage stable.

Hello, when the vehicle starts, the starting power is supplied by the battery. Once the engine is running, the generator supplies power to the consumer and charges the battery.

Before the car is started, the generator has not been running and will not generate electricity, it is the motor vehicle that matches the battery to provide electric energy to start the engine, and when the engine is running normally, the generator can charge the battery and maintain the battery. At this time, the mechanical common sense of motor vehicles should be understood by the driver.

Hello, this vehicle starts with battery electricity when ignition, because the engine is not running when the car is not started and cannot be powered by the engine.

Hello, the car you said was of course powered by the battery when it was ignited, and the engine was powered after it was started.

When starting, of course, the power used is the battery, so if the battery power is reduced or the storage power is insufficient, it will lead to the phenomenon that the vehicle starts too slowly or cannot start.

Hello, the ignition of the car uses the electricity of the battery, and the battery will be charged after the engine works.

When the car is ignited, it must be powered by a battery. The power of the battery is sufficient or insufficient, which directly affects the ignition of the engine.

It must be the electricity of the battery, the engine, he just has the engine and there is no electricity. The electricity of the engine is also from the battery.

Hello. When the vehicle is started, of course, the battery supplies power to the vehicle. The generator generates electricity only when the vehicle is in motion.

Hello, the car uses the power of the battery when it is ignited, but the engine is used after the car is started.

The electrical energy used when the motor vehicle is ignited is, of course, the power carried by the battery itself, not the power of the generator.

When the car is ignited, it uses the electricity stored in the battery. If there is a loss of electricity in the battery, it will not be able to ignite.

When the car is ignited, the battery power is used, so that the battery power will be affected if the battery is insufficient.

Hello, this start-up must be the power of the battery, after the start is the power provided by the generator.

Hello, the ignition of this car depends on the power of the battery, and the battery cannot be started if it loses power.

Hello, the car is ignited with a battery, and the engine is not working at this time.

The power from the battery is then generated by a generator, which energizes the various electronic devices in the car.

All gasoline engines must be ignited in order to burn, and the principle of ignition is first to understand the ignition system, including the battery, ignition coil, distributor, and spark plug. The function of the ignition system is to ignite the gas mixture in the cylinder to make the engine run.

The principle of ignition is that the direct current of the battery increases the starting voltage through the ignition coil, and the spark plug is distributed to each cylinder through the distributor, and the spark plug ignites the mixed gas of air and fuel in the cylinder in the cylinder to produce the first to promote the piston operation.

The voltage of the battery is used when the car is started, and the engine of the car will generate electricity when it is working.

When the car is ignited, the battery power is used, and the lack of battery power will affect the normal start.

Flooded cylinder phenomenon. In cold weather, due to the low intake temperature, the fuel is not atomized well in the cylinder, and if the ignition energy is insufficient, the result will be flooding, that is, too much fuel accumulates in the cylinder, exceeding the fire limit concentration and cannot be landed.

The ignition system is not in good working condition: especially in cold weather, due to the low intake temperature, the fuel is not atomized well in the cylinder, if the ignition energy is insufficient, the result will be flooded, that is, too much fuel accumulates in the cylinder, exceeding the fire limit concentration and can not land.

Every time you drive, you should develop a good habit and double-check the safety status of your vehicle.

1. Check whether the vehicle oil, brake oil, gasoline and cooling water are normal; Whether there is leakage.

2. Check whether the vehicle braking system is intact and effective; whether the air pump and air reservoir are leaking; whether the tire pressure is normal; whether the tyre fastening screws are loose; Whether the spare tire is in good condition.

3. Check whether the vehicle direction lights, brake indicators, lights, wipers, and horns are normal.

4. Check whether the steering system of the vehicle is intact and reliable.

5. Record the inspection situation, report and repair the problem in time, and strictly prohibit the "sick car" from appearing.

Reason 1: After the vehicle is parked overnight, the fuel in the oil pipe flows into the fuel tank, resulting in insufficient oil pressure when the vehicle starts.

Instructions for inspection and confirmation: connect the oil pipe with the oil pressure gauge, turn on the ignition switch, and the oil pressure gauge is about 320kpa.

Cause 2: The water temperature sensor is faulty.

Instructions for checking and confirming: Use a multimeter to detect the resistance and voltage of the water temperature sensor.

Reason 3: The cylinder pressure of each cylinder is not enough or the deviation is too large.

Description of inspection and confirmation method: Test the cylinder pressure of each cylinder with a cylinder pressure gauge.

Reason 4, carbon canister solenoid valve electrical failure, because the control mode of the carbon canister solenoid valve is closed-loop control, so when starting the vehicle in the morning, the solenoid valve also works, resulting in the mixing ratio of fuel and air is thickened, so that the engine can not burn normally.

Check and confirm the method description: Use 431 to detect and read the fault code.

Reason 5: Whether the carbon canister is seriously blocked;

Reason 6: The carbon deposition of the car is relatively serious, and you can focus on checking the three-way catalysis, fuel injector and other places;

Reason 7: The gasoline filter element is seriously blocked;

Reason 8: Other related electronic components have failed, making it difficult for the engine to start.

The reasons for answering the car to start twice are: 1. The ignition energy of the spark plug is weak, and some car owners do not replace the spark plug after the maintenance cycle in order to save money, which will lead to a lack of fire when the ignition energy of the spark plug decreases seriously, and the engines of many models are mostly direct injection in the cylinder, so that the requirements for the spark plug are higher.

2. The ignition difficulty caused by carbon deposition in the car is accompanied by slight shaking at idle, cleaning the throttle, cleaning the carbon deposition in the inlet tract, and cleaning the fuel injector can solve the problem.

3. It is also possible that the fuel pressure is low and the fuel injection atomization is poor, and it is not easy to start, it is recommended to try it, open the key door to the instrument light full bright, hear the sound of the oil pump, wait until the sound is over, close the key door, and then repeat the above operation, and then start it should be able to play at one time.

If this happens after 20,000 kilometers of driving, it may be that the fuel filter has failed. The function of the gasoline filter is to filter out solid impurities such as iron oxide and dust or water contained in the gasoline, which can reduce the probability of the fuel injector being blocked by impurities on the one hand, and ensure the gasoline oil quality flowing into the fuel system on the other hand.