How does the way the engine is arranged affect the body structure?

Hey, there is a certain impact on planting, yes, the longitudinal space requirements for the interior space of our engine are relatively high.

Hello, the engine is arranged in such a way that it has the ability to drive the body structure.

According to the engine relative to the transmission.

The position of the chassis and the body is different, the car engine.

The layout form usually has five types: engine front-wheel drive, engine front-wheel drive, engine rear rear-wheel drive, engine mid-rear wheel drive, and all-wheel drive

1) Engine front-wheel drive (FF) engine front-wheel drive is a popular layout form in automobiles, which has the characteristics of compact structure, reducing the mass of the car, reducing the height of the body floor, improving the handling stability at high speed, and high power transmission efficiency.

2) Engine: Front-mount, rear-wheel drive (FR): Front-mounted, rear-wheel drive is the traditional form of arrangement. The advantages are that the engine is easy to maintain, the clutch and transmission control mechanism is simple, the floor height of the cargo compartment is low, and the axle load distribution of the front and rear wheels is more reasonable; The disadvantage is the propeller shaft.

It is longer, which affects the transmission efficiency. This form of arrangement is mostly adopted by high-end or large cars.

3) Engine rear-mounted rear-wheel drive (RR) The engine rear-mounted rear-wheel drive is a large and medium-sized bus.

The prevailing layout form has the advantages of reducing indoor noise and facilitating the interior layout of the body. A small number of cars also take this form.

4) Engine: Mid-mounted rear-wheel drive (MR): Engine: Mid-mounted rear-wheel drive is used in most sports cars and formula cars.

The form taken. Since cars use engines with a lot of power and size, placing the engine behind the driver's seat and before the rear axle is beneficial for optimal axle load distribution and improved vehicle performance. Commonly found in some high-performance sports cars.

5) All-wheel drive (AWD).

All-wheel drive is a form unique to off-road vehicles, and it is common to have a delayed motor in front and a transfer case behind the transmission to distribute power to all wheels separately.

In terms of its overall function, the automobile engine is basically composed of two major mechanisms: crank connecting rod mechanism and valve mechanism; Five major systems: starting system, fuel supply system, ignition system, lubrication system, cooling system.

Briefly introduce the composition and function of each institution and system

1. Crank connecting rod mechanism.

It is mainly composed of three parts: cylinder block and crankcase group, piston connecting rod group and crankshaft flywheel group.

Function: Convert the heat energy generated during fuel combustion into the mechanical energy of the reciprocating motion of the piston, and then convert the reciprocating motion of the piston into the rotary motion of the crankshaft through the connecting rod to output power to the outside world.

2. a gas distribution mechanism.

It is mainly composed of intake valves, exhaust valves, tappets, rocker arms, camshaft timing gears, etc.

Function: make the combustible mixture into the cylinder in time, and discharge the exhaust gas from the cylinder in time.

3. Starting system.

It is mainly composed of a starter and its attachments.

Function: Start the stationary engine and turn it into normal operation.

4. Fuel supply system.

It is mainly composed of gasoline tank, gasoline pump, gasoline filter, air filter, intake pipe, exhaust pipe, exhaust muffler, etc.

Function: Mix gasoline and air into a suitable combustible mixture into the cylinder for combustion, and exhaust the exhaust gas generated by combustion is discharged from the engine.

5. Ignition system.

It is mainly composed of batteries, generators, power breakers (combined with power distribution devices and other component electrical appliances), ignition coils, spark plugs, etc.

Function: Ensure that the compressed mixture in the gas cylinder is ignited in time at the specified time.

6. Lubrication system.

It is mainly composed of oil pump, filter collector, pressure limiting valve, lubricating oil channel, oil primary filter, oil fine filter, oil cooler, etc.

Function: The lubricating oil is sent to the surface of the parts in relative motion at a certain pressure to reduce the frictional resistance between them, reduce the wear between the parts, and at the same time play the role of cooling the friction parts and cleaning the surface of the friction parts.

7. Cooling system.

It is mainly composed of water pumps, radiators, fans, water distribution pipes, cylinder block drain valves, cylinder blocks and cavities (water jackets) cast in the cylinder head.

Function: Dissipate the heat of the heated parts into the atmosphere to ensure the normal operation of the engine.

Engine components: It is composed of crank connecting rod mechanism, air valve mechanism, oil pump, oil filter, pressure limiting valve and other parts.

1. The crank connecting rod mechanism is the main motion mechanism of the engine to realize energy conversion and complete the working cycle, which is composed of cylinder block, cylinder head, piston, connecting rod, crankshaft and flywheel and other parts.

2. The function of the valve mechanism is to realize the ventilation process of the engine, according to the working cycle of the engine, open and close the intake and exhaust valves regularly, so that the combustible mixture enters the cylinder, and the exhaust gas is discharged from the cylinder. The valve train usually consists of a valve train, a valve train train and a valve actuator.

3. Fuel supply system.

The function of the fuel supply system of the gasoline engine is to prepare a certain concentration and quantity of fresh combustible mixture and send it to the cylinder according to the requirements of the engine. The function of the diesel engine fuel supply system is to supply diesel and air into the cylinder respectively in a certain proportion, form a mixture in the combustion chamber and burn it, so that the engine can work continuously.

4. The function of the lubrication system is to supply a certain amount of clean lubricating oil to the friction surface of the engine moving parts. It is mainly composed of oil pumps, oil filters, pressure limiting valves and other parts.

5. Cooling systemThe function of the cooling system is to absorb and dissipate the excess heat of the heated parts of the engine to ensure that the engine works at the most suitable temperature state. It is mainly composed of water pumps, cooling jackets, radiators, fans, thermostats and other parts.

6. Ignition systemThe function of the ignition system is to generate electric sparks and ignite the combustible mixture in the gas cylinder at the specified time. It is mainly composed of ignition coils, distributors, batteries, generators and spark plugs.

7. The function of the starting system is to start the engine. The crankshaft starts to turn under the action of external force, and the process by which the engine starts to run on its own is called the starting of the engine. The starting system is mainly composed of the starter and its accessories. Hope to be adopted by you, thank you.

1 Engine.

The engine is the power plant of the car.

Its function is to make the fuel supplied to it burn.

And generate momentum (

converts thermal energy into mechanical energy).

The wheels are then driven through the chassis' drive train to drive the car.

The fuels used in modern cars are mainly gasoline and diesel.

The gasoline engine consists of a crank connecting rod mechanism, a valve mechanism, a fuel supply system, a cooling system, a lubrication system, an ignition system, and a starting system.

Yes. Diesel engines do not have an ignition system because the ignition method of the fuel in the cylinder is compression-ignition.

2 Chassis. The function of the chassis is to support and install the automobile engine and its 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 the normal driving of the car.

The chassis consists of a drive train, a driving system, a steering system, and a brake system.

3. Body and ancillary equipment.

The body is mounted on the frame of the chassis for the driver, passengers to ride and load cargo.

Except for passenger cars and some passenger cars, which are integral structures, 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 supply includes: Accumulators and hair.

Motor; Electricity.

The equipment includes the starting system, ignition system and other electrical devices of the engine, including lighting, signals, instruments, air conditioning, audio, wipers, etc.

The first body group, the second two major institutions.

According to the position of the engine relative to each assembly, the car has the following layouts:

1 Engine: front-wheel drive (FR).

The traditional layout is used by most trucks, some cars and buses.

2 Engine: Front-wheel drive (FF).

Most sedans prevail.

3 Engine rear-mounted rear-wheel drive (RR).

Large and medium-sized buses are prevalent, and a small number of cars are also used.

4 engine mid-mounted rear-wheel drive (MR).

Formula cars and most sports cars are used, as are a few large and medium-sized buses.

5 All-wheel drive (NWD).

Off-road vehicles have a unique arrangement, usually with the engine front-mounted and a transfer case behind the transmission that sends power to all the drive wheels separately.

There are these types: front-wheel drive, front-rear drive, mid-rear wheel-drive, and rear rear drive.

The automobile chassis is generally composed of four parts: transmission system, driving system, steering system and braking system. The role of the chassis is to support and install the automobile engine and its components. The assembly forms the overall shape of the car and accepts the power of the engine, so that the car can move and ensure normal driving.

Transmission system: The drive train is generally composed of a clutch, a transmission, a universal transmission, a final reducer, a differential and a half shaft. It is composed of four parts: drive train, driving system, steering system and brake system.

It's all about maintenance.

1. Clean and scrub the chassis of the car regularly.

The automobile chassis is the closest part of the automobile parts to the ground, and in the process of driving, it often falls into the mud and sand, causing the automobile chassis to be stained with mud, garbage and other attachments. These pollutants will enter the chassis of the car, causing the pollution of the transmission system and other components of the car chassis, causing the friction between the parts to increase, accelerating the loss of parts, greatly shortening the service life of the car, and in rainy and snowy weather, the components in the rain and snow may corrode the parts of the chassis to a certain extent.

Therefore, we need to wash the chassis of the car regularly, and thoroughly clean the chassis frame, steering arm, steering tie rod, rotating shaft, tire fender and other positions after rain and snow to prevent the above parts from rusting.

2. Check the operation of each part of the vehicle chassis.

In the normal daily driving process of the vehicle, there will be no abnormal noise, and when there is a problem with the chassis of the car, there will be a more abnormal and huge sound, and the operation and control of the car will also be inconvenient.

3. Inspection and maintenance of automobile shock absorbers.

The shock absorber of the car is also installed in the car chassis of the car, the shock absorber of the car needs to be maintained daily, the working state of the shock absorber will affect the stability of the car in the driving process, if the shock absorber of the car is in good working condition, it can directly affect the service life of other parts of the car, thereby increasing the economy of the use of the car.

An engine is a complex machine that consists of many mechanisms and systems. Whether it is a gasoline engine, or a diesel engine; Whether it's a four-stroke engine or a two-stroke engine; Whether it's a single-cylinder engine, or a multi-cylinder engine. In order to complete the energy conversion, realize the work cycle, and ensure the continuous normal operation for a long time, the following mechanisms and systems must be in place.

1. Crank connecting rod mechanism.

The crank linkage mechanism is the main moving part of the engine to realize the working cycle and complete the energy conversion. It is composed of a body group, a piston connecting rod group and a crankshaft flywheel group, etc. In the power stroke, the piston is subjected to gas pressure in a linear motion in the cylinder, which is converted into the rotary motion of the crankshaft through the connecting rod, and outputs power from the crankshaft.

During the intake, compression and exhaust strokes, the flywheel releases energy and converts the rotational motion of the crankshaft into the linear motion of the piston.

2. a gas distribution mechanism.

The function of the valve mechanism is to open and close the intake and exhaust valves at regular intervals according to the working sequence and working process of the engine, so that the combustible mixture or air enters the cylinder, and the exhaust gas is discharged from the cylinder to realize the ventilation process. Most of the valve trains adopt overhead valve valve mechanisms, which are generally composed of valve groups, valve transmission groups and valve actuation groups.

3. Fuel supply system.

The function of the fuel supply system of the gasoline engine is to prepare a certain amount and concentration of mixed gas according to the requirements of the engine, supply it to the cylinder, and discharge the exhaust gas after combustion from the cylinder to the atmosphere; The 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.

4) Lubrication system.

The function of the lubrication system is to deliver a certain amount of clean lubricating oil to the surface of the parts in relative motion 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.

5) Cooling system.

The function 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.

6) Ignition system.

In a gasoline engine, the flammable mixture in the cylinder is ignited by an electric spark, for which a spark plug is installed on the cylinder head of the gasoline engine, and the head of the spark plug protrudes 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.

7) Starting system.

In order to make the engine transition from a stationary state to a working state, it is necessary to rotate the crankshaft of the engine with external force first, so that the piston can 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. Therefore, the whole process from the crankshaft starting to rotate under the action of external force to the engine starting to idle automatically is called the starting of the engine.

The device required to complete the starting process is called the starting system of the engine.