What is the difference between a transverse engine and a longitudinal engine?

Use different spaces:Transverse engines need to occupy very little space in the passenger compartment, and the interior space of cars with transverse engines is generally larger. In addition, the transverse engine has high transmission efficiency and lower cost, so it is suitable for use in some family cars or urban SUVs.

Longitudinal engines need to take up more space in the car.

Longitudinal four-wheel drive is the perfect choice, but the cost, and fuel consumption are the highest. The longitudinal front-wheel drive or longitudinal rear-wheel drive at the center level is a high-end and sporty choice, and this part of the model is mainly in the mid-range. Transverse front-wheel drive is the most demanding, cost-effective choice for people-friendly family cars.

Features of transverse engines.

The crankshaft of the transverse engine, the input and output shafts of the transmission and the axle are all parallel, so if it is a front-wheel drive car, the most suitable is the front transverse engine, the power transmission distance is short, the direction is consistent, so the transmission efficiency is very high, which is the first reason why most cars use transverse engines. In rear-wheel drive vehicles, because the power is transmitted to the rear axle, the direction change of power should be reduced as much as possible when the transmission distance cannot be shortened.

If transverse positioning is adopted, because the direction of the crankshaft and the transmission shaft is perpendicular, it is necessary to change the direction once to transmit power through the transmission shaft, but the direction of the transmission shaft and the direction of the rear axle are also perpendicular, so the direction of rotation needs to be converted again on the rear axle, which undoubtedly reduces the efficiency of the transmission system.

Engine longitudinal means that the engine is perpendicular to the front axle of the car, and engine transverse means that the engine is parallel to the front axle of the car. To put it simply, you stand in front of the front of the car facing the engine, and if the engine is placed horizontally in front of you, it is a transverse engine; Vertically placed in front of your eyes, it is the longitudinal engine, the position and arrangement of the engine determine the performance of the vehicle Since the front start.

Placed in different ways.

The engine is longitudinally and horizontally, but the engine is placed differently, and the drive is also different. Generally, cars with longitudinal engines are rear-wheel drive, and cars with transverse engines are front-wheel-drive.

The engine is longitudinally and horizontally, but the engine is placed differently, and the drive is also different. Generally, cars with longitudinal engines are rear-wheel drive, and cars with transverse engines are front-wheel-drive. Generally, the interior space of longitudinal engine cars is not as large as that of transverse engine cars.

The engine of a common family sedan or SUV model is transverse, and the engine of a high-end luxury sedan or sports sedan is generally longitudinal. Family cars pursue low cost and large interior space, not sportiness and handling, so general family cars will use transverse engines.

The difference between the transverse engine and the longitudinal engine: 1. The driving mode is different: the transverse engine car is front-wheel-drive; Cars with longitudinal engines are rear-wheel drive.

2. Different placements: the transverse engine is horizontally placed; The longitudinal engine is pendulum vertically. If the axis of the engine crankshaft is arranged in the same direction as the wheel half axis, it is a transverse arrangement; If the axis of the engine crankshaft is crossed with the axis of the wheel half-shaft, it is longitudinal.

When the car adopts front-engine front-wheel drive, the engine is arranged horizontally, so that the gearbox and reducer can be concentrated and placed in the engine compartment, which greatly utilizes the space in the car.

The differences between longitudinal and transverse engines are as follows:

1. The engine and gearbox are placed in different directions. The horizontal starting pants loss machine is placed horizontally, and the gearbox is also required to be placed side-by-side horizontally. The longitudinal engine is placed longitudinally, and the gearbox is placed behind the engine.

2. The direction of power output is different. The direction of power transmission of a straight engine is usually perpendicular to the forward direction of the empty car; The direction of power transmission of the longitudinal engine is parallel to the direction of travel of the car.

3. The driving mode of the car is different. Straight engines are usually front-wheel drive, and longitudinal engines are usually front-rear-wheel-drive.

4. The suspension system is different. In the longitudinal engine layout, the front suspension is mostly installed with a more advanced multi-link or wishbone shock. The front suspension of models with transverse engine layout is mostly MacPherson suspension.

Longitudinal engines are generally rear-drive high-horsepower.

The difference between longitudinal engine and transverse engine: the placement direction is the same, the driving mode is different, the power output direction is different, the space occupation is different, and the driving experience is different.

1. The placement direction is different

A longitudinal engine is the engine perpendicular to the front axle of the car and the gearbox of the vehicle.

Longitudinally placed behind the engine. The transverse engine is parallel to the front axle of the car, and the gearbox is placed side-by-side with the engine.

2. The driving mode is different

Longitudinal engines are generally front-rear-wheel drive, and transverse engines are generally front-wheel drive.

3. The power output is mostly in different directions

The power output direction of the longitudinal engine is parallel to the direction of travel of the car, and the power output direction of the transverse engine is perpendicular to the direction of the car.

4. The space occupation is different

The longitudinal engine occupies a large cab space, while the transverse engine occupies less space.

5. The driving experience is different

The longitudinal engine layout space is relatively flexible, the body balance is good, and the driving experience is good, while the transverse engine is affected by the layout and the driving experience is not good.

Horizontal and vertical engines are placed and driven differently.

Generally, family cars and SUV models use transverse engines, and cars with transverse engines are generally front-wheel drive.

The empty cabin occupied by the transverse engine is small, and the empty cabin with the transverse engine is generally larger.

Moreover, the transverse engine has high transmission efficiency and low cost, which is very suitable for some family cars or urban SUVs.

Generally, sports cars or luxury cars will be placed vertically, and the general vertical motor cars are rear-wheel drive or four-wheel drive.

Cars with longitudinal engines have more balanced front and rear weights, which can bring better handling to the car.

Vertical engines occupy a large amount of empty space inside.

There are a lot of sports cars that focus on handling and have vertical engines. For example, many of the cars produced by BMW are vertical engines.

Most of the weight of a car with a transverse engine is concentrated in the front of the car, which is not conducive to the handling of the car. If the front of the car is too heavy, it is more likely to understeer when cornering.

However, there are also some performance cars with vertical horizontal engine layouts, and some front-wheel drive cars also use vertical engine layouts.

Millions of car purchase subsidies.

The difference between a transverse engine and a longitudinal engine is that the direction of placement is different, the direction of power output is different, the driving mode of the car is different, and the suspension system is different.

A transverse engine is parallel to the front axle of the car, and the vehicle gearbox is placed side-by-side with the engine, while a longitudinal engine is perpendicular to the front axle of the car, and the vehicle gearbox is placed longitudinally behind the engine.

Transverse engines are subject to layout and are mostly front-wheel drive, which makes the driving experience poor in terms of performance and handling. The longitudinal engine layout space is relatively flexible, the suspension training system will be more abundant, and most of them are rear-drive, the body has a better sense of balance with rock, and the driving control experience is better.

Engine layout

Because transverse engines are common in small displacement models, the body size is limited, and the layout of transverse engines occupies less cab space. The longitudinal engine occupies a larger cab space, and the longitudinal engine is larger in size, which is generally common in large-displacement models, and the body space is more sufficient, which has less impact on the cab space and the performance experience will be better.

Transverse engines are generally front-wheel drive, while longitudinal engines are generally front-rear-wheel-drive. Because the transverse engine is parallel to the front axle of the car, the direction of power output is perpendicular to the direction in which the car is forward, and the power is transmitted laterally through the gearbox into the half shaft. The power output direction of the longitudinal engine is parallel to the direction of travel of the car, and the power is transmitted longitudinally through the gearbox into the transmission shaft.

The difference between a transverse engine and a longitudinal engine is as follows:

1. The placement of the motor is different, the engine crankshaft axis and the wheel half-axis are arranged in the same direction, that is, the transverse arrangement, and the crankshaft axis of the engine is cross-arranged with the wheel half-axis axis, that is, the longitudinal arrangement.

2. The driving mode of the engine is different, the transverse engine adopts the front front wheel drive, and the longitudinal engine adopts the front rear drive.

Which is better, transverse engine or longitudinal engine?

The longitudinal engine is better, so the longitudinal engine is more expensive than the transverse engine, the longitudinal engine is mostly suitable for high-end luxury cars or sports cars, while the engine of a family car or SUV is transverse. For most family cars, the main pursuit is low cost and larger interior space, and the requirements for sports performance are not very high, so most family cars use transverse engines.

In addition, for the limousine itself, due to the large cabin, the engine and gearbox can occupy more space in the empty compartment, so most of the luxury cars choose a longitudinal engine. In addition, the transverse and longitudinal positioning of the engine has different placement methods, and the driving mode is also different, most of the cars with longitudinal engines are rear-wheel drive, and the transverse engines are mostly front-wheel-drive.

I believe that many attentive students will find that the layout of the engine in the cabin of different cars is not carried by the corresponding situation. At present, there are two types of engine layouts in the engine compartment: transverse and longitudinal.

SoWhy is the engine arranged transverse and longitudinal? What is the difference between a transverse engine and a longitudinal engine?

What is transverse and longitudinal positioning of the engine

The engine of the car is normally placed in the front engine compartment. If the engine crankshaft axis is arranged in the same direction as the wheel half axis, it is a transverse arrangement; If the axis of the engine crankshaft is crossed with the axis of the wheel half-axis, it is longitudinal.

Transverse engine.

When a car uses a front-engine front-wheel drive, the engine is generally arranged horizontally. Because in this way, the gearbox and reducer can be arranged in the engine compartment, which greatly utilizes the space in the car; Meantime.

The transversely arranged engine has a more direct power transmission, which reduces a lot of unnecessary transmission parts, and the transmission loss is also smaller, and at the same time, it can also reduce the manufacturing cost. (Transverse engines have the inherent advantages of front-wheel drive).

Longitudinal engine

When the car adopts a front-engine rear-wheel drive, the engine is generally arranged in a longitudinal manner. Because front-mounted rear-wheel drive needs to transmit engine power from the engine compartment to the rear wheels, the longitudinal arrangement of the engine can greatly simplify the power transmission mechanism(When arranged longitudinally, the rear end of the engine, i.e. the flywheel end, is directly towards the rear wheels of the vehicle, so it is more suitable for front-mounted rear-wheel drive).

In the cabin of the longitudinal engine, the left and right space is abundant, and the vehicle can use better front suspension; At the same time, the front-rear wheel drive is arranged longitudinally, and the front and rear mass of the body is more balanced.

Exceptions

The above is normal for most vehicles, but some brands have exceptions

Audi

Audi models such as the A4, A6, and Q5, even if they are front-wheel drive cars, are arranged in a longitudinal direction. This is to be a perfect match for Audi's proud quattro all-wheel drive system. Because these models have four-wheel drive and front-wheel drive versions, if you use two layout forms in the same model, it will only increase your own car manufacturing cost for no reason;

At the same time, the front suspension in the above models uses a five-link independent suspension, and there is simply no room left for the engine to be arranged laterally.

Volvo

The exception is Volvo, which uses a transverse engine in all Volvo models.