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List of the table of contents of this article:

• 1,casino plus free 100 Compared with direct injection and electric injection of automobile engines, which one is more fuel-efficient?
• 2, What is the difference in the performance of the four engines L, V, W and H of a car?
• 3, Engine of Automobile Knowledge Collection Series

Compare the direct injection and electric injection of the car engine, which one is more fuel-efficient?

Direct injection is more fuel-efficient than multi-point electric injection. The high-pressure fuel of the direct injection engine is sprayed into the combustion chamber and enters in a small mist. When it evaporates, it absorbs heat and can cool the cylinder. It can burn thinly, which can improve the combustion efficiency by 20%. The intake is more than that of the traditional engine, and the combustion is sufficient, reducing the generation of C0.

The electric injection engine will be more fuel-efficient when it is driven normally: the idle taxiing of the electric injection engine is not only not fuel-efficient, but also more fuel-consuming to a certain extent. According to the principle of the engine, the electric injection engine can judge the amount of fuel injection according to the computer program.

Compared with non-turbocharged electric injection engines, the turbocharged direct injection engine is more fuel-efficient under the same output power after the turbine speed reaches a certain speed.

Compared with direct injection, in-cylinder direct injection is more fuel-efficient after all. The advantage of multi-point electric injection is that the engine has better emission. The multi-point injection engine has an injection sequence, and the air-fuel ratio is more accurately controlled. The fuel is injected according to the timing, and the injection time and the injection amount are accurately controlled.

Direct injection in the cylinder. The multi-point electric injection engine has an injection sequence, which can accurately control the fuel injection amount and fuel injection time, so as to control the air-fuel ratio, but the fuel consumption is high, and the concentration of the direct injection mixture in the cylinder is low and the fuel efficiency is high, so the direct injection in the cylinder is more fuel-efficient.

What is the difference in the performance of the four engines L, V, W and H of a car?

The engine cylinder arrangement is divided into L-type, V-type, H-type and W-type. x0dx0ax0dx0aL engine: x0dx0a is also known as "LineEngine" engine, means that the cylinders are arranged in a straight line, and all its cylinders are arranged side by side at the same angle into a plane.

The V-type engine has a tilted misalignment layout of adjacent cylinders, so the V-type engine with the same number of cylinders is shorter in length and has a lower center of gravity than the in-line engine, and when the V-type engine cylinder moves back and forth, the vibration will be partially offset by itself, so the smoothness of VVV12 is relatively good.

Compared with the V-type engine, the W-type can make the engine shorter, and the crankshaft can also be shorter, which can save the space occupied by the engine, and the weight can also be lighter, but its width is larger, making the engine chamber fuller.

The current engines mainly include L (in-line) engine, V-type engine, W-type engine, and horizontally opposed engine.Another special one is the rotor engine, which is Mazda's patent.

Engine of Automobile Knowledge Collection Series

Figure 1 Automobile Engine 1 Basic Structure of Engine (1) Crank Connecting Rod Mechanism Crank Connecting Rod Mechanism is composed of fuselage group, piston connecting rod group and crankshaft flywheel group three Partial composition, its function is to transform the heat energy generated by fuel combustion into the rotational motion of the crankshaft through the linear reciprocating motion of the piston to the outside through the flywheel.

The adjacent cylinders of the horizontally opposed engine are arranged against each other (the bottom of the piston is outward), and the angle between the two cylinders is 180°, but it is still essentially different from the 180°V engine.

Car engine: The engine is the power unit of the car.It consists of 2 major mechanisms and 5 major systems: crank connecting rod mechanism; gas distribution mechanism; fuel supply system; cooling system; lubrication system; ignition system; start system. Cooling system: generally composed of water tank, water pump, radiator, fan, thermoster, water temperature gauge and water release switch.

Introductory knowledge of automobile engines Automobiles have entered our ordinary families and have become one of the most common means of transportation in our daily life.

Car Maintenance Knowledge Engine Chapter Use appropriate quality grade of lubricating oil. For gasoline engines, SD-SF-grade gasoline oil should be selected according to the additional devices and working conditions of the intake and exhaust system; for diesel engines, CB-CD-grade diesel oil should be selected according to the mechanical load. The requirements not lower than those stipulated by the manufacturer shall prevail.

Body group, composition: Cylinder head, cylinder block and crankcase Function: As the assembly base of various engine mechanisms and systems, it is the skeleton that supports and fixes the crank connecting rod mechanism and other devices, and the relevant parts of the tractor chassis constitute the frame of the tractor.