A carburetor is a mechanical device that mixes a certain percentage of gasoline with air under the action of a vacuum generated by engine operation. As a precise mechanical device, the carburetor uses the kinetic energy of the inhaled air flow to atomize the gasoline. Its important role for the engine can be called the heart of the engine. Its complete device should include starting device, idling device, medium load device, full load device, acceleration device. The carburetor will automatically proportion the corresponding concentration and output the corresponding amount of mixture according to the different working conditions of the engine. In order to make the mixture more uniform, the carburetor also has the effect of atomizing the fuel for the normal operation of the machine.

The clutch assembly is located in the flywheel housing between the engine and the gearbox. The clutch assembly is fixed on the rear plane of the flywheel with screws. The output shaft of the clutch is the input shaft of the gearbox. When the car is running, the driver can step on or release the clutch pedal as needed to temporarily separate and gradually engage the engine and the gearbox, so as to cut off or transmit the power input from the engine to the transmission. Clutch is a common component in mechanical transmission, which can separate or engage the transmission system at any time. Its basic requirements are: smooth joining, rapid and thorough separation; convenient adjustment and repair; small outline size; small quality; good wear resistance and sufficient heat dissipation capacity; convenient operation and labor saving. Commonly used are divided into jaw type and there are two types of friction.

Caliper disc brake is a type of disc brake. Its rotating element is a metal disc that works on the end face, called a brake disc. The fixed element is a brake block composed of a friction block with a small working area and its metal back plate. There are 2 to 4 in each brake. These brake blocks and their actuating devices are installed on both sides of the brake disc. In the clamp-shaped bracket, it is collectively called a brake caliper. The brake disc and the brake caliper together constitute a caliper disc brake.

Muffler means that for airflow pipes that have noise transmission at the same time, you can use pipes and elbows with sound-absorbing linings, or use noise-reducing devices such as pipes with sudden changes in cross-sectional area and other discontinuous acoustic impedance to attenuate or reduce the noise in the pipe. Reflect back. The former is called a resistive muffler, and the latter is called a resistive muffler. There are also impedance composite mufflers.

Starter and igniter coil are the lighting devices of fluorescent lamps. It is composed of a neon bulb and a small capacitor equipped with a fixed static contact piece and a moving contact piece made of a hot bimetallic piece. Connected to the starting circuit of the fluorescent lamp. A device installed in the gas discharge light source circuit to start and ignite the discharge lamp, also known as a trigger.

Durability is very important for current diesel engines. Diesel engine parts manufacturers are trying to make the engines live as long as possible before overhaul. The time to overhaul for an engine is usually dictated by high oil consumption or blowby. Therefore, it is necessary to understand how wear affects the cylinder kit dynamics, oil consumption, and blowby in an engine. This paper explores the effect of power cylinder component (rings and cylinder bore) wear by using a cylinder kit dynamics model. The model predicts how wear will affect ring motion, inter-ring gas pressure, blowby, etc. The parameters studied were: liner wear, ring face wear, and ring side wear. Two different engines were modeled. The characteristics of these two engines are very different. As a result, the effects of wear are different and the corresponding durability will be different. This illustrates the need to model each individual type of engine separately. The modeling shows that top ring face wear is very significant for maintaining good oil and blowby control. Liner wear is important, but does not have as large an effect as ring wear. The effects of side wear are significant for these two cases.

The design of an engine carburetor is traditionally based on a mechanical device that uses a shutter to control the amount of fuel intake. The fuel is mixed with air to form fuel mixture that is burnt in engine cylinders. This approach has several inherent issues. First, the shutter opening is controlled by creating a vacuum that results in required amount of fuel injected into carburetor chamber. As the speed of a vehicle increases by pressing accelerator, more fuel is required in the carburetor chamber. The rate of increase in fuel cannot be accurately calculated by a mechanical device. Second, the amount of air intake results in an imbalance in fuel mixture ratio. Third, the carburetor's efficiency degrades with age, resulting poor fuel efficiency. This paper proposes EFI for small vehicles. A test case was developed for a two-wheel motor-bike by using an ARDUINO board. The proposed solution was implemented in the engine of motor-bike with minor changes in the carburetor. The cost was quite comparable with mechanical carburetor, and the results were quite promising.