transmission
M(Manual): Manual Transmission
A (Automatic): automatic transmission
A4: Four-speed automatic transmission

engine
LLengtn: Cylinder alignment method, stands for inline. L4, inline 4 cylinder
V(6,8,12): That is, the cylinders are arranged on both sides and become “V” shape. “6,8,12” represents the number of cylinders, and V6 represents “6-cylinder V-type engine”. The advantage is that the engine is Compact layout, small footprint.
DOHC: Double overhead camshaft
OHC: overhead camshaft
EFI: Fuel Injection

Automatic transmission
P block: Parking, used when the car is parked or completely stationary.
R block: reverse gear, when using the gear must be completely static to enter the block, it is forbidden to shift from the forward gear into the reverse gear in the movement to prevent damage to the gear.
N block: neutral, the vehicle is suspended, such as waiting for red, green.
D block: traffic stop.
2 block: Medium speed, used in low snow or urban areas.
L block: low gear, used to climb slopes or easy to skid the road.
OD gear: Overdrive for high-speed driving conditions Wheel rims and tires (Wheel rim, Tire)
Tire Tread
Refers to the part of the tire tread in contact with the ground, in order to prevent slipping and heat dissipation, there are many patterns on the tire tread.
Tubeless Tires
The tire is not equipped with an inner tube and the tire itself has inner tube structure. The air is filled in the tire and is now widely used instead of the inner tube.
Tire Tube
It is made of good quality rubber, filled with air to support the weight of the car, and is fitted inside the tire. Currently, small cars are used less frequently, and large passenger vans are still commonly used.
Tire Size
The tire size is printed on the tire wall and there are two ways to express it, such as 34*7 or 7.50-20. The former is a high pressure tire and the latter is a low pressure tire. There are also many signs, such as D for light vehicles. F is for medium-sized cars, G is for standard cars, and H, L, and J are for large-scale luxury and high-performance automobiles. If a R is printed on the tire wall, such as 175R13, it means that the tire is a radial tire, and the length is 175mm (6.9 inches).吋 吋 , , , , , , , , , , , , , , , , , , , , , , , , 13 13 13 13 13 13 13 13 13 13 13 13 13 13.
Wheel Rim
The steel rings used in most vehicles are made by pressing and welding steel. The current steel rings are made by pressing and welding steel materials. The outer rings of current steel rings are manufactured with precision to assemble tires without tube.
Aluminum Alloy Wheel (Alumminum-Rim)
Lightweight, easy to process, one-piece cast, not easily deformed, appearance changes, is currently used more, there are fuel-efficient, good thermal conductivity, uniform intensity distribution, reduce the advantages of rolling noise.
Wheel Balance
It is one of the inspection items for the tires in the front wheel alignment. If the tires are not balanced, it will cause the left and right yaw to oscillate up and down, and the steering wheel will oscillate when the vehicle is running. The ride is extremely uncomfortable and must be weighed. Block on both sides of the steel ring to balance it.
Wheel Alignment
The front wheel of the car, in order to take into account the ease of operation and safety on the road, to reduce the wear and tear of the tyres, the various angles, namely the toe, camber, camber, caster, forward steering, etc. In recent years, vehicles have used four-wheel independent suspensions, and the rear wheels also have toe and camber angles to increase the stability and comfort of driving. Therefore, there are rear wheel alignments.

SIDE SLIP TESTER
In the case of a car traveling 1 km, the number of meters on the lateral side of the car is not stated, that is, M/KM, which must not exceed 3-5M/KM. The reasons for the occurrence of side slip in the vehicle include poor toe, camber, and back rake. As a result, when the supervision station does a vehicle safety inspection, it only needs a partial slip.

MPV: The full name of MPV is Multi-Purpose Vehicle, which is a multi-purpose vehicle. It combines the functions of a sedan, a wagon and a van. Each seat in the vehicle can be adjusted and has a variety of combinations. The backrest of the middle row seat can be turned into a table, the front seat can be rotated 180 degrees, etc. In recent years, the MPV tends to be miniaturized, and the so-called S-MPV has emerged, and the S is small. The meaning of the S.MPV captain is generally between 4.2-4.3m, (of course, there are also many large MPVs) with a compact body, typically 5-7 seats.
SUV: The full name of the SUV is the Sport Utility Vehicle. Chinese meaning is a sport utility vehicle. Now mainly refers to those who design avant-garde, novelty four-wheel drive SUV. SUV general front suspension is a sedan-type independent suspension, after Suspension is a non-independent suspension, the ground clearance is large, to a certain extent, both the comfort of the car and off-road performance of the off-road vehicle. Due to the multi-combination function of the seat with MPV type, the vehicle can carry people. Cargo can be used for a wide range of applications. For reprint,