Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

How Does an Automotive Ignition System Work?

1 Answers

LeVera

07/29/25 3:30pm

When a gasoline engine operates, the combustion of the air-fuel mixture is controlled by the spark plug ignition. The working principle of the ignition system is to supply the spark plug with high-voltage electricity of sufficient energy at the appropriate moment, according to the engine's operating state and sequence, causing a spark between its electrodes to ensure the ignition of the air-fuel mixture and enable the engine to perform work. The ignition process of the ignition system can be divided into the following three stages: Stage 1: Contact closure, formation and growth of the primary current. When the contacts are closed, a low current flows through the circuit, following this path: positive terminal of the battery - ignition switch - primary winding of the ignition coil - breaker contacts - negative terminal of the battery. Stage 2: Contact opening, generation of the secondary high-voltage stage. At the instant the breaker contacts open, the distributor rotor aligns precisely with one of the side electrodes. The current path at this stage is: secondary winding of the ignition coil - positive terminal of the battery - side electrode of the spark plug - center electrode of the spark plug - high-voltage wire - side electrode of the distributor - center electrode of the distributor - secondary winding of the ignition coil. Stage 3: Spark plug discharge stage. After the spark plug is energized, a discharge spark occurs between its center electrode and side electrode, igniting the atomized gasoline under compression in the cylinder, thereby activating the engine.

Was this review help?

1

2

Share

More Forum Discussions

Is there any danger in filling up the gas tank in summer?

It is not recommended to fill the car's gas tank to the brim during summer. Hazards of overfilling: Overfilling the tank causes gasoline to evaporate faster: Rapid gasoline evaporation first leads to energy waste, and the evaporated gasoline fumes can enter the cabin, which may affect human health with long-term exposure. Overfilling the tank can severely reduce the performance of the carbon canister: This ultimately leads to issues such as engine shaking and increased fuel consumption. Safety risks: The car's gas tank has a vent hole at the top. If the tank is filled to the brim, gasoline can easily overflow from the vent hole. If there happens to be an open flame nearby, the spilled gasoline is highly flammable.

On which road sections is reversing not allowed?

When reversing a motor vehicle, the driver should observe the situation behind the vehicle and confirm safety before reversing. Reversing is not allowed at railway crossings, intersections, one-way roads, bridges, sharp curves, steep slopes, or in tunnels. Frequently check rearview mirrors while driving: Some novice drivers, due to excessive nervousness, keep their eyes fixed on the road ahead after getting in the car. This habit is not only incorrect but also unsafe. Novice drivers should frequently check the left and right rearview mirrors to understand the surrounding situation of the vehicle. Relying solely on reversing cameras: Modern vehicles come with many high-tech devices, such as reversing cameras, which are excellent features. However, when reversing, do not rely solely on the reversing camera. Be sure to also check the left and right rearview mirrors and the situation in front of the vehicle, as reversing cameras have blind spots. Checking the front of the vehicle helps avoid the situation of focusing only on the rear while neglecting the front.

How Much Damage Does Rapid Acceleration Cause to an AT Transmission?

Rapid acceleration during cold starts can cause significant damage to the transmission. Damage caused by cold starts: A cold start refers to starting the engine after it has been turned off for a period of time, during which the engine has cooled down to a temperature much lower than its normal operating temperature, and the engine oil has mostly drained back. Starting the engine under these conditions is considered a cold start. Damage caused by rapid acceleration from a traffic light: Even if the vehicle is equipped with an automatic start-stop function, while waiting at a traffic light, the overall working temperature of the vehicle remains in the normal range. The lubricating oil inside the engine and transmission has not completely drained back, and an oil film still remains on the metal surfaces. In this scenario, rapid acceleration does not cause significant wear to the transmission or engine, so vehicle owners need not worry.

Will speeding between 10% and 20% over the limit on ordinary roads result in penalty points or fines?

Speeding between 10% and 20% over the limit on ordinary roads results in 3 penalty points and a fine. According to Section 2 of the Road Traffic Safety Law: Article 42 of the Motor Vehicle Traffic Regulations states that motor vehicles driving on roads must not exceed the maximum speed indicated by speed limit signs. On road sections without speed limit signs, a safe speed should be maintained. Notes on speeding: Speeding less than 10% over the limit is not penalized, or may result in a warning, which is a relatively light penalty. Speeding is dangerous, and even speeding less than 10% over the limit is still a traffic violation. For speeding offenses, exceeding the speed limit by more than 10% results in penalties that become more severe with higher speeds. Speeding more than 50% over the limit results in 12 penalty points at once.

What Causes Engine Gasket Oil Leakage?

There are two basic scenarios for automobile engine oil leakage. Automobile engine oil leakage: When there are clearly visible oil stains on the surface of the automobile engine casing, and if these stains reappear shortly after being cleaned, or even in severe cases where oil drips like water droplets, the vehicle should be sent for repair as soon as possible. Automobile engine oil seepage: If the engine casing only has minor oil stains, it indicates that the oil leakage is not particularly severe. The amount of seepage is minimal and hardly noticeable at this stage, posing almost no impact on the engine. The most direct and effective solution is to replace all the sealing rings. Urban traffic congestion, with frequent stops and starts, necessitates constant gear shifting. Modern vehicles have an increasing number of gears, leading to more frequent gear shifts, greater working pressure inside the transmission, higher temperatures, and accelerated aging and deformation of the rubber seals in the transmission.

What Speed is Considered Low-Speed Driving?

Generally, speeds below 30 km/h are referred to as low-speed driving. Low-speed, also known as low gear, is a commonly equipped gear in automatic transmission vehicles, marked as "L" or "1" at the bottom of the gear shift console. Essentially, it corresponds to the first gear in the transmission. Driving behavior that involves engaging low gear to pass through waterlogged roads, speed-restricted areas, or icy and snowy surfaces is termed as low-speed driving. Civilized Driving: Drivers must strictly adhere to laws and regulations while driving, consistently maintaining civilized driving and courteous road behavior. A qualified driver is not only skilled in technique but, more importantly, should possess good driving manners, habits, and moral integrity to ensure safe and civilized driving. Compliance with Traffic Regulations: Drivers should uphold traffic ethics and professional ethics, practice civilized and courteous driving, strictly comply with traffic regulations, and obey the instructions of traffic police. When driving through pedestrian crossings, bus or train stations, or busy streets with heavy traffic or crowds, drivers should slow down or stop to yield.

Trending Ranking

How to Interpret Oxygen Sensor Data Stream?

What is the fuel consumption of the Excelle 1.3t?

How many days of practice are generally needed for left-side reverse parking?

How Often Should Air Filters and Cabin Air Filters Be Replaced?

What to Do When Car Tire Pressure is Low?

What Causes Motorcycle Air Filter Clogging?

Can I Call 110 for Vehicle Removal?

What is the range of a hybrid electric vehicle in kilometers?

Which is faster between manual and automatic transmissions with the same displacement?

Is the annual vehicle inspection available nationwide?

More Forum Discussions

What are the types of crankcase ventilation?

What is the economical speed of the Honda 190?

How Many Years Can a Motorcycle Not Be Transferred?

Can items be placed on the roof rack of a city SUV?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.