How a keyless entry system prevents a person from stealthily opening a car door within three meters

When the four doors are locked, enter the function activation area(i.e. within meters of the door handle on the main driver's side)) press the keyless button on the handlebar to unlock all doors at the same time! Hazard warning lights flash once! If you don't open any of the doors within 30 seconds, all the doors will automatically re-enter!

So it's not that it automatically unlocks, but you have to press a button.

Car keyless entry system.

The product adopts the world's most advanced RFID radio frequency technology and the most advanced vehicle identification system, takes the lead in the development of miniaturized and low-power RF antennas, and successfully integrates the remote control system and keyless system, follows the traditional vehicle circuit protection, truly realizes the dual radio frequency system, double anti-theft protection, and provides maximum convenience and safety for car owners.

Generally, the car key can be sensed within one meter of the main driver's seat, and then you have to press the unlock button on the handle of the main driver and open the door within 10 seconds to unlock, do not press the unlock button, the vehicle will not react at all, press the unlock button, do not open the door within 10 seconds, the car will be locked again,There will be front and rear light prompts throughout the unlocking process, which is very obvious. So there's no such thing as secretly opening the car door.

And even if you open the door, you can't start the car in the front seat without a key.

Don't be targeted, or you'll open it as soon as you're gone.

There are these very advanced tools.

The data communication module DCM is a network communication function module used in automobiles

Five systems.

Intake air cooling. Fuel starts ignition.

The automobile system is generally aimed at the chassis of the car, and there are four systems in total, namely the transmission system, the driving system, the steering system, and the braking system.

In a broad sense, the car is divided into four parts, the body, the chassis, the electrical appliances, the engine, and the body is divided into the frame, girders, doors, and hood. Electrical appliances are further divided into power supplies, power distribution devices, and electrical equipment.

The five major systems include: fuel supply system, starting system, cooling system, lubrication system, and ignition system. Fuel supply system:

The fuel supply system consists of an air supply system, a fuel supply system and an electronic control system. Starting system: It is mainly composed of battery, starting control and transmission mechanism and starter (motor).

Cooling system: The cooling system is mainly composed of water pumps, radiators, fans, water jackets and thermostats.

There are two major mechanisms for automobile engines, and the five major systems are mainly as follows:

1.Crank linkage mechanism2.Accompanying mechanismThe systems are:

Fuel supply systemCooling system

Lubrication system

Ignition system

Start-up system

The power transmission device between the engine of a car and the driving wheels is called the drive train of the car. It should ensure that the car has the necessary traction and speed under various driving conditions, as well as the functions of coordinating changes between traction and vehicle speed, so that the car has good power and fuel economy.

It should also ensure that the car can be reversed, and that the left and right drive wheels can adapt to the differential requirements, and that the power transmission can be smoothly combined or completely and quickly separated as needed.

The drive train includes clutch, transmission, transmission shaft, final reducer, differential and half shaft. The power transmission device between the engine of a car and the driving wheels is called the drive train of the car.

The car has four major systems: braking system, steering system, driving system, and transmission system.

Let's talk about it in detail.

1 Engine: The engine is the power unit of the car. Its function is to generate power for fuel combustion, and then drive the wheels through the transmission train of the chassis to drive the car.

There are two main types of engines: gasoline engine and diesel engine. The gasoline engine consists of a crank connecting rod mechanism, a valve mechanism and a fuel supply system, a cooling system, a lubrication system, an ignition system, and a starting system. The ignition method of diesel engine is compression-ignition, so there is no ignition system.

2. Chassis: The role of the chassis is to support and install the automobile engine and its various components and assemblies, form the overall shape of the car, and accept the power of the engine, so that the car can move and ensure normal driving. The chassis is composed of four parts: the drive train, the driving system, the steering system and the brake system.

3 Body: The body is mounted on the frame of the chassis and is used for the driver, passengers to ride or load cargo. The body of cars and buses is generally an integral structure, and the body of trucks is generally composed of two parts: the cab and the cargo box.

4 Electrical equipment: Electrical equipment consists of two parts: power supply and electrical equipment. Power sources include batteries and generators. Electrical equipment includes the starting system of the engine, the ignition system of the gasoline engine and other electrical devices.

From the above description, it can be seen that the car has four major systems: braking system, steering system, driving system and transmission system.

A car generally consists of four basic parts: engine, chassis, body, and electrical equipment. The following is mainly about the car engine.

The engine is the power plant of the car, which is composed of 2 major mechanisms and 5 major systems: crank connecting rod mechanism, valve mechanism, cooling system, fuel supply system, lubrication system, ignition system, and starting system, but the diesel engine has one less ignition system than the gasoline engine.

2. Lubrication system: The engine lubrication system is composed of oil pump, filter, oil filter, oil channel, pressure limiting valve, oil gauge, pressure plug and oil dipstick.

3. Fuel supply system: The fuel system of gasoline engine includes gasoline tank, gasoline gauge, gasoline pipe, gasoline filter, gasoline pump, carburetor, air filter, etc. The diesel engine fuel system includes major components such as fuel injection pumps, fuel injectors and governors, as well as auxiliary devices such as diesel tanks, fuel transfer pumps, oil-water separators, diesel filters, fuel injection advancers, and high and low pressure oil pipes.

4. Starter system: starter, battery.

5. Ignition system: spark plug, high-voltage wire, high-voltage coil, distributor, ignition switch.

6. Crank connecting rod mechanism: connecting rod, crankshaft, bearing, flywheel, piston, piston ring, piston pin, crankshaft oil seal.

7. Valve mechanism: cylinder head, valve chamber cover camshaft, valve intake manifold, exhaust manifold, air filter, muffler, three-way catalytic supercharger.

1.Cooling system: It is mainly used to cool and dissipate heat from the engine to cool the engine.

2. Fuel system: mainly responsible for providing fuel to the engine.

3. Ignition system: It is mainly for the ignition of the mixture, which is the combustion of the mixture. Diesel engines do not.

4. Starting system: It is mainly used to turn the stationary engine.

5. Lubrication system: mainly lubricates the mechanical components of the engine.

Five systems: 1. The function of the fuel supply system of the gasoline engine fuel supply system is to prepare a certain amount and concentration of mixture according to the requirements of the engine, supply it to the cylinder, and discharge the exhaust gas after combustion from the cylinder to the atmosphereThe function of the diesel engine fuel supply system is to supply diesel and air into the cylinder respectively, form a mixture in the combustion chamber and burn it, and finally discharge the exhaust gas after combustion.

2. The function of the lubrication system of the lubrication system is to deliver a certain amount of clean lubricating oil to the surface of the parts in relative motion, so as to achieve liquid friction, reduce frictional resistance, and reduce the wear of parts. and the surface of the part is cleaned and cooled. The lubrication system usually consists of a lubricating oil channel, an oil pump, an oil filter, and some valves.

3. The function of the cooling system of the cooling system is to dissipate part of the heat absorbed by the heated parts in time to ensure that the engine works at the most suitable temperature state. The cooling system of a water-cooled engine usually consists of a cooling jacket, a water pump, a fan, a water tank, a thermostat, etc.

4. Ignition system In the gasoline engine, the combustible mixture in the cylinder is ignited by electric sparks, so a spark plug is installed on the cylinder head of the gasoline engine, and the head of the spark plug extends into the combustion chamber. All equipment that can generate electric sparks between the spark plug electrodes on time is called an ignition system, which usually consists of a battery, a generator, a distributor, an ignition coil and a spark plug.

5. In order to make the engine transition from a stationary state to a working state, the starting system must first rotate the crankshaft of the engine with external force to make the piston reciprocate, and the combustible mixture in the cylinder burns and expands to work, and pushes the piston to move downward to rotate the crankshaft. The engine can run on its own and the duty cycle can be automatic.

There are five major systems in the car, which are the fuel supply system, lubrication system, cooling system, ignition system, and starting system.