What is the engine type concept? Engine type?

Engine type definition: The engine type refers to the characteristics of the power unit, such as fuel type, number of cylinders, displacement and static braking power. Engine classification and parameters:

The engine installed in the car or multi-purpose passenger car is marked with the engine professional manufacturer, model and production number according to the regulations. The most common classification is according to the arrangement of engines and the number of cylinders, including W-type 12-cylinder engines, V-type 12-cylinder engines, W-type 8-cylinder engines, V-type 8-cylinder engines, opposed 6-cylinder engines, V-shaped 6-cylinder engines, in-line 5-cylinder engines, and in-line 4-cylinder engines. Also include parameters such as DOHC, SOHC and turbocharging, that is, single overhead camshaft (SOHC) and double overhead camshaft (DOHC) two, because the mid-to-high-end car engine is generally multi-valve and V-cylinder arrangement, need to use double camshafts to control the intake and exhaust valves respectively, so the double overhead camshaft is used by many famous brand engines.

Turbo Definition : So what is turbocharging? It can be abbreviated as turbo, if you see turbo or t at the rear of the car, it means that the engine used in the car is turbocharged.

A turbocharger is actually an air compressor that compresses air to increase air intake. It uses the inertia impulse of the exhaust gas discharged by the engine to push the turbine in the turbine chamber, and the turbine drives the coaxial impeller, and the impeller pressurizes the air sent by the air filter pipe to pressurize it into the cylinder. When the engine speed increases, the exhaust gas discharge speed and the speed of the wheel also increase, the impeller compresses more air into the cylinder, the pressure and density of the air increase can burn more fuel, and the corresponding increase in fuel can increase the output power of the engine.

Advantages of turbocharger: The biggest advantage of turbocharger is that it can greatly increase the power and torque of the engine without increasing the engine displacement, generally speaking, the power and torque of the engine after installing the supercharger should be increased by 20%-30%. The disadvantage of the turbocharger is hysteresis, that is, due to the inertia of the impeller, it is slow to respond to sudden changes in the throttle, which causes the engine to delay the increase or decrease of power output, which is a bit unexciting for the car that wants to accelerate or overtake suddenly.

Engine type: 1According to the engine fuel usage, the engine can be divided into two types, one is the gasoline engine.

One is a diesel engine.

The volume of the gasoline engine is smaller than that of the slim boy, the weight is light, and the noise is relatively small, while the volume of the diesel engine is relatively large, the power is strong, the economic performance is good, and the noise is relatively large. 2.According to the stroke, it can be divided into four-stroke internal combustion engine and two-stroke internal combustion engine.

3.According to the cooling method of the hole, it can be divided into water-cooled engine and air-cooled engine, and the water-cooled engine is coolant.

to cool the engine, an air-cooled engine uses air to cool the engine. 4.According to the cylinder, it can be divided into horizontal bars.

Engines and multi-cylinder engines, cars generally use four-cylinder engines, and luxury cars use six- or twelve-cylinder engines. 5.According to the arrangement of the cylinders, it can be divided into single-row engines and double-row engines, the single row is that the cylinders are distributed in one row, and the double row is that the cylinders are distributed in two rows.

6.According to the air intake system, it can be divided into naturally aspirated engine, turbocharged engine and supercharged engine.

There are several types of car engines:

1. According to the type of power, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors and hybrid vehicles.

2. According to the classification of the air intake system, it can be divided into four types: naturally aspirated, turbocharged, mechanically supercharged and double-pressed.

3. According to the piston movement mode, it can be divided into two types: reciprocating piston type inner roll gas turbine and rotary piston engine.

Fourth, according to the cylinder arrangement type, it is divided into in-line engine, V-type engine, W-type engine and horizontally opposed engine.

5. According to the number of cylinders, it can be divided into single-cylinder engine and multi-cylinder engine. Modern cars mostly use three-cylinder, four-cylinder, six-cylinder, and eight-cylinder engines.

6. According to the different cooling methods, it can be divided into water-cooled engine and air-cooled engine Xiaobeiqing machine.

7. According to the number of strokes, it can be divided into four-stroke internal combustion engine and two-stroke internal combustion engine.

8. According to the classification of fuel **, carburetor engine, EFI engine and in-cylinder direct injection engine.

Engine type: 1According to the use of engine fuel, the engine can be divided into two kinds, one is the gasoline engine, the other is the diesel engine, the gasoline engine is relatively small in size, light in weight, and the noise is relatively small, and the diesel engine is relatively large in volume, strong in power, good in economic performance, and relatively loud in noise.

2.According to the lead Qi Congzhao itinerary, it can be divided into four-stroke internal combustion engine and two-stroke internal combustion engine. 3.

According to the cooling method, it can be divided into water-cooled engine and air-cooled engine, water-cooled engine is to use coolant to cool the engine, air-cooled engine is to use air to cool the engine. 1

Classification of automobile engines:

1. According to the different powers, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors and hybrid vehicles.

2. According to the working mode of the air intake system, it can be divided into four types: naturally aspirated, turbocharged, mechanically supercharged and double-pressed.

3. According to the piston movement, it can be divided into two types: reciprocating piston internal combustion engine and rotary piston engine.

4. According to the cylinder arrangement type, it is divided into in-line engine, V-type engine, W-type engine and horizontally opposed engine.

5. According to the number of cylinders, it can be divided into single-cylinder engine and multi-cylinder engine. Modern cars mostly use three-cylinder, four-cylinder, six-cylinder, and eight-cylinder engines.

6. According to different cooling methods, it can be divided into water-cooled engine and air-cooled engine. The water-cooled engine cools evenly, works reliably, and has a good cooling effect, and is widely used in modern automotive engines.

7. According to the number of strokes, it can be divided into four-stroke internal combustion engine and two-stroke internal combustion engine. Four-stroke internal combustion engines are widely used in automobile engines.

8. Classified according to the fuel ** method: carburetor engine and EFI engine and direct injection engine in the cylinder.

1. According to the different powers, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors and hybrid vehicles. 2. According to the working mode of the air intake system, it can be divided into four types: naturally aspirated, turbocharged, mechanically supercharged and double-pressed. 3. According to the piston movement mode, it can be divided into two types: reciprocating piston internal combustion engine and rotary piston engine.

4. According to the cylinder arrangement type, it is divided into in-line engine, V-type engine, W-type engine and horizontally opposed engine. 5. According to the number of cylinders, it can be divided into single-cylinder engine and multi-cylinder engine. Modern cars mostly use three-cylinder, four-cylinder, six-cylinder, and eight-cylinder engines.

6. According to different cooling methods, the rubber stool can be divided into water-cooled engine and air-cooled engine. The water-cooled engine cools evenly, works reliably, and has a good cooling effect, and is widely used in modern automotive engines. 7. According to the number of strokes, it can be divided into four-stroke internal combustion engine and two-stroke internal combustion engine.

Four-stroke internal combustion engines are widely used in automobile engines. 8. Classified according to the way of fuel: carburetor engine and EFI engine and in-cylinder direct injection engine.

At present, the main engines are L (inline) engines, V-type engines, W-type engines, and horizontally opposed engines. Another special one is the rotary engine, which is a Mazda patent.

V-type engine: The cylinder of the V-shaped engine is split in pairs and left and right, forming a certain angle, which looks like a "V" from the side, so it is called a V-shaped engine. Compared with the in-line engine, the V-type engine shortens the length and height of the body, increases the rigidity of the cylinder block, reduces the weight of the engine, but increases the width of the engine, and the shape is more complex, and the processing is difficult, and it is generally used for engines of 6 cylinders and above.

At present, there are four main types of V-type engines: V6, V8, V10, and V12.

In-line engine: Its cylinders are arranged in a row, that is, in a row, hence the name. Nowadays, in-line engines mainly include L3, L4, L5, and L6.

The cylinder block of the in-line engine is lined up, the cylinder block, cylinder head and crankshaft are simple in structure, low manufacturing cost, good low-speed torque characteristics, low fuel consumption, compact size, and widely used, but the disadvantage is low power.

W-type engine: Strictly speaking, the W-type engine is still a type of V-type engine, but the cylinders on both sides of the V-type engine are divided into two groups, which look like "W" from the side, hence the name. It can also be said that the W12 engine is made of two V6 engines, and its biggest advantage is that it is compact and easy to arrange, which is conducive to the optimization of the space of the engine compartment, and the disadvantage is that the structure is too complex.

The W engine is a patented technology of Volkswagen, and only Volkswagen, that is, Volkswagen's brand, uses the W engine, which currently mainly includes W12 and W16.

Horizontally opposed engine: In fact, it is also a type of V-shaped engine, but its cylinder angle is 180 degrees. The horizontally opposed engine is a combination of automobile engines that is most in line with the principle of motion machinery, and its manufacturing cost and process difficulty are quite high, and only Porsche and Subaru are currently used in the world.

The biggest advantage of a boxer-opposed engine is its low center of gravity. Since the cylinders are "flat", not only does it lower the center of gravity of the car, but it also allows the front end to be designed flat and low, all of which enhance the car's driving stability. At the same time, the horizontally opposed cylinder layout is a symmetrical and stable structure, which makes the engine run smoothly better than the V-engine, and the power loss during operation is also minimal.

In addition, the vibrations generated by the piston crankshaft when moving left and right cancel each other out, resulting in low noise and low fuel consumption. At present, there are mainly horizontal opposition 4 cylinders and 6 cylinders.

1-1;The basic concept of the engine.

Basic concepts. Definition: A machine that converts some form of energy into mechanical energy.

Heat engine: A machine that converts the heat energy generated by fuel combustion into mechanical energy, referred to as a heat engine, such as internal combustion engine, external combustion engine, etc.

Internal Combustion Engine: External Combustion Engine:

The characteristics of the internal combustion engine: high thermal efficiency, small size, small mass, easy to move, etc.

Piston internal combustion engines: reciprocating piston and rotary piston.

gas turbine internal combustion engines;

Classification of engines.

Classification by fuel: gasoline engine, diesel engine, compressed natural gas engine, liquefied petroleum gas engine, dual-fuel engine.

Classified by fire mode: compression type and ignition type.

The number of strokes of the reed god trapped ring according to the work: four-stroke and two-stroke.

Number and arrangement of cylinders: single cylinder and multi-cylinder.

Classification of cooling methods: liquid cooling and gas cooling.

According to the form of air intake of the engine, it can be divided into supercharged and non-supercharged engines.

The differences between engine types are as follows: 1. The automobile engine is a machine that provides power for the car and is the heart of the car, which can affect the power, economy and environmental protection of the car; 2. Automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors and hybrid engines, etc., and their main difference is that the power is different; 3. In addition to the use of gasoline and diesel, vehicles that use other new energy sources are called new energy vehicles, including pure electric vehicles, hybrid vehicles, fuel cell vehicles, gas vehicles, bioethanol biodiesel vehicles and hydrogen-powered vehicles, etc., and the fuel used for any different type of engine is different.

According to the different forms of the main components that convert thermal energy into mechanical energy, engines can be divided into two categories: piston engines and gas turbines.

Piston engines can be divided into reciprocating piston type and rotary piston type according to the piston movement mode. Reciprocating piston engines are the mainstream of modern engines. The piston reciprocates in a straight line in the cylinder and is converted into a rotary motion by the connecting rod and crankshaft.

Reciprocating piston engines can be divided into many different forms depending on the type of ignition, duty cycle, camshaft position and number, cylinder arrangement, fuel usage and cooling method.

1.Classified according to ignition mode.

According to the ignition method, it can be divided into ignition engine (gasoline engine, liquefied petroleum gas engine and dual-fuel engine) and compression-ignition engine (diesel engine and heavy oil engine).

2.Classified according to the duty cycle.

According to the working cycle, it can be divided into four-stroke engine and two-stroke engine.

3.Classification is based on the location and number of camshafts. According to the position of the camshaft, it can be divided into an engine with a camshaft mounted on the cylinder head (camshaft overhead) and an engine with a camshaft mounted on the cylinder block (camshaft center, also called valve overhead).

According to the number of camshafts, it can be divided into single camshaft engine, double camshaft engine and four-cam engine.

4 Classification according to the fuel used.

According to the fuel used, it can be divided into gasoline engine, diesel engine, liquefied petroleum gas engine and dual-fuel engine.

5.Classification is based on the number and arrangement of cylinders.

According to the number of cylinders, it can be divided into single-cylinder engine and multi-cylinder engine. According to the arrangement of the cylinders, it can be divided into in-line engine, V-engine, radial engine, opposed engine and horizontal engine.

6.Classified according to cooling method.

According to the cooling method, it can be divided into water-cooled engine and air-cooled engine.

Hyundai currently uses a predominantly four-stroke, multi-cylinder, water-cooled, overhead camshaft engine.