登录查看更多内容

How does the weight distribution of electric and hybrid vehicles differ from traditional vehicles?

由人工智能和领英社区提供技术支持

If you are interested in electric and hybrid vehicles, you might have wondered how they differ from traditional vehicles in terms of weight distribution. Weight distribution is the ratio of the mass of each axle to the total mass of the vehicle. It affects the handling, stability, and performance of the vehicle. In this article, you will learn how electric and hybrid vehicles achieve different weight distribution patterns and what are the advantages and disadvantages of each.

此文章中的业界达人

由社区从 4 条内容中精选。了解更多

Hamdi Tosun

e-mobility manager at ABB

1 Electric vehicles

Electric vehicles (EVs) use batteries to store and deliver energy to electric motors that power the wheels. The batteries are usually located under the floor or in the rear of the vehicle, depending on the design. This means that EVs tend to have a lower center of gravity and a more balanced weight distribution than traditional vehicles, which have the engine in the front and the fuel tank in the rear. A lower center of gravity improves the cornering and braking abilities of the vehicle, while a balanced weight distribution reduces the load transfer between the front and rear wheels, enhancing the traction and stability. However, EVs also have a higher overall weight than traditional vehicles, which can increase the inertia and rolling resistance of the vehicle, affecting the acceleration and fuel efficiency.

添加您的观点

Hamdi Tosun

e-mobility manager at ABB
举报内容
There is one overriding reason that battery-electric vehicles are heavier than an equivalent sized ICE powered vehicle. This is the weight of the batteries. The greater the vehicle range, the larger the battery, the larger the battery the greater the weight.

已翻译

赞
Johnson Chishimba

Founder | AI, Machine Learning, Data Science
举报内容
This is a an interesting explaination showing how battery location affects an EVs center of location and it's weight distribution. This battery placement helps to lower the EVs center of gravity but can also help to make the rid smoother and stable. Stability is important in extreme driving conditions. However, this weight increase in EVs can affect the inertial and rolling resistance of the vehicle affecting acceleration and fuel efficiency as you have out it however, advancements in battery technology are gradually reducing this weight.

已翻译

赞

2 Hybrid vehicles

Hybrid vehicles (HEVs) combine a conventional internal combustion engine (ICE) with an electric motor and a battery pack. The ICE can either power the wheels directly or charge the battery, while the electric motor can assist the ICE or drive the wheels alone. The battery pack is usually smaller than in EVs and can be placed in various locations, such as under the seat, in the trunk, or near the engine. This means that HEVs have a more variable weight distribution than EVs or traditional vehicles, depending on the configuration and operation mode of the hybrid system. A variable weight distribution can offer some flexibility and adaptability to different driving conditions and preferences, but it can also create some challenges for the suspension, steering, and braking systems, which have to cope with different load distributions and dynamics.

添加您的观点

Johnson Chishimba

Founder | AI, Machine Learning, Data Science
举报内容
As pointed out, HEVs have a more variable weight distribution than EVs or traditional vehicles. One of the benefits of this is the ability to adapt to different driving needs. Given a situation where the vehicle is stack in heavy traffic with traffic lights all over, the electric motor can take the lead consequently, reducing the emissions and fuel consumption.

已翻译

赞

3 Traditional vehicles

Traditional vehicles (TVs) use an ICE to power the wheels through a transmission and a drivetrain. The ICE is usually located in the front of the vehicle, while the fuel tank is usually located in the rear. This means that TVs tend to have a front-heavy weight distribution, with more mass on the front axle than on the rear axle. A front-heavy weight distribution can affect the handling and stability of the vehicle, especially in curves and on slippery roads, where the rear wheels can lose grip and cause oversteer or fishtailing. However, TVs also have a lower overall weight than EVs or HEVs, which can reduce the inertia and rolling resistance of the vehicle, improving the acceleration and fuel efficiency.

添加您的观点

Johnson Chishimba

Founder | AI, Machine Learning, Data Science
举报内容
Yes, the ICEs are heavy at the front as per the design giving them a front-heavy weight distribution as explained. This distribution results into challenges when cornering and on slippery roads as you have pointed out. But it's important to notice the clear weight difference of tradition vehicles when compared to EVs and HEVs. For instance, this weight reduction results into better acceleration and can result into improved fuel efficiency due to lower rolling resistance.

已翻译

赞

4 Weight distribution measurement

If you want to measure the weight distribution of your vehicle, you will need a set of scales that can measure the weight on each wheel or axle. You can either use a professional service or do it yourself with some basic equipment and tools. The procedure involves parking your vehicle on a flat and level surface, making sure that the tires are properly inflated and aligned, placing a scale under each wheel or axle, connecting them to a display or computer, recording the weight on each wheel or axle, calculating the weight distribution as the percentage of total weight on each axle, and comparing the results with the manufacturer's specifications or your desired values. If needed, adjustments can be made.

添加您的观点

5 Weight distribution adjustment

If you are not satisfied with the weight distribution of your vehicle, there are several adjustments you can make to try and improve it. For example, you can add or remove weight from different parts of the vehicle, such as the trunk, the seats, or the engine bay. This can shift the center of gravity and the load distribution of the vehicle, as well as change its overall weight and performance. You can also change the suspension settings, such as the spring rate, damping, or ride height. This can alter the stiffness and geometry of the suspension, which can affect load transfer and handling. Finally, you can change tire size, pressure, or compound. This can modify contact patch and grip of tires, impacting traction and stability but also potentially changing speedometer and fuel economy.

添加您的观点

6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

添加您的观点

Mechanics

+ 关注

给文章评分

我们借助人工智能创建了此文章。您认为这篇文章怎么样？

很棒不太好

举报此文章

查看全部

How does the weight distribution of electric and hybrid vehicles differ from traditional vehicles?

1

2

3

4

5

6

1 Electric vehicles

2 Hybrid vehicles

3 Traditional vehicles

4 Weight distribution measurement

5 Weight distribution adjustment

6 Here’s what else to consider

Mechanics

给文章评分

感谢您的反馈

更多Mechanics相关文章

更多相关阅读内容

How does the weight distribution of electric and hybrid vehicles differ from traditional vehicles?

1

2

3

4

5

6

1 Electric vehicles

2 Hybrid vehicles

3 Traditional vehicles

4 Weight distribution measurement

5 Weight distribution adjustment

6 Here’s what else to consider

Mechanics

给文章评分

感谢您的反馈

查看其他技能