Comparison of Direct Injection vs. Combined Injection: Which Is Better?-Foreverparts Power Equipment Co., Ltd.

Tel: 0086-594-2635266

E-mail: sales@foreverparts.net

Todo

Todo
Gestión de productos
Noticias
Introducción al contenido

Home

Return to News List

Comparison of Direct Injection vs. Combined Injection: Which Is Better?

Dec 22,2025

Direct Injection vs. Combined Injection: A Core Concern for Car Owners

In the field of automotive engine fuel injection technology, the choice between direct injection and combined injection has always been a core concern for car owners. The two technologies differ significantly in power output, fuel economy and maintenance costs, so a rational judgment should be made based on actual driving scenarios.

Advantages of Combined Injection Technology

The combined injection system achieves optimal fuel supply under different working conditions through the intelligent switching between port fuel injection (PFI) and direct injection (DI).

Low-speed working conditions: It adopts port fuel injection, which can effectively reduce the risk of in-cylinder carbon deposits (reducing by about 50% compared with pure direct injection).
High-speed & high-load working conditions: It switches to direct injection mode, which improves combustion efficiency and power output.

Data shows that compared with pure direct injection, combined injection can reduce fuel consumption by 7%-10% during urban commuting, extend the carbon deposit cleaning cycle to 40,000–60,000 km, and cut maintenance costs by about 23%. In addition, it is easier to meet the National VI B emission standard, increasing the annual inspection pass rate by 25%.

Core Features of Direct Injection Technology

The direct injection system sprays fuel directly into the combustion chamber. It delivers better fuel atomization under high-load working conditions, increasing torque output by about 10% compared with combined injection, and enabling quicker response during high-speed overtaking.

This technology has a relatively simple structure. For models with the same configuration, the purchase cost is 15,000–20,000 yuan lower than that of combined injection models. When cruising at a high speed of 120 km/h, its fuel consumption is 12% lower than that of combined injection, making it suitable for high-frequency high-speed driving scenarios

TAG:

Comparison of Direct Injection vs. Combined Injection: Which Is Better?

None

Recommended

Comparison of Direct Injection vs. Combined Injection: Which Is Better?

E-mail:
sales@foreverparts.net

Mobile/WeChat:
+86 13338519290

Address:
5F, Nanchen Building, No. 112, Liuqiao, Nanyuan East Road, Xialin Street, Chengxiang District,Putian City,Fujian Province

Whatsapp/Phone:

+86 13338519290

E-mail:

sales@foreverparts.net

COOKIES

Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy

COOKIES

required

These cookies are necessary for basic functions such as payment. Standard cookies cannot be turned off and do not store any of your information.

analyze

These cookies collect information, such as how many people are using our site or which pages are popular, to help us improve the customer experience. Turning these cookies off will mean we can't collect information to improve your experience.

Feature

These cookies enable the website to provide enhanced functionality and personalization. They may be set by us or by third-party providers whose services we have added to our pages. If you do not allow these cookies, some or all of these services may not function properly.

advertise

These cookies help us understand what you are interested in so that we can show you relevant advertising on other websites. Turning these cookies off will mean we are unable to show you any personalized advertising.

5F, Nanchen Building, No. 112, Liuqiao, Nanyuan East Road, Xialin Street, Chengxiang District,Putian City,Fujian Province

AI | SEO

Business license

Welcome Message

* Keep your mobile phone or email open so that we can reach you in time

Business license