United Automotive Electronic Systems Launches 500-Bar GDI System with CVO5 for China VII and Euro 7 Compliance

United Automotive Electronic Systems Co., Ltd (UAES) has introduced China's first mass-produced 500-bar gasoline direct injection (GDI) system equipped with Controlled Valve Operation (CVO) 5 technology for short-duration injection control. The new system has been developed to meet increasingly stringent particle number (PN) limits defined under the upcoming China VII and Euro 7 Real Driving Emissions (RDE) regulations. Having completed development and validation, the solution has entered mass production and is now being supplied for integration into production vehicles.

500-Bar Fuel Injection Designed for Future Emission Standards

The new GDI system utilizes 500-bar high-pressure fuel atomization to produce finer fuel droplets, enabling improved mixing of fuel and air inside the combustion chamber. This optimized combustion process helps suppress soot particle formation directly at the source, supporting compliance with tighter emission requirements. The technology has been engineered specifically to address future regulatory demands while maintaining reliable performance in modern gasoline-powered passenger vehicles.

How CVO5 Technology Improves Injection Precision

The Controlled Valve Operation (CVO5) short-duration injection control algorithm enables stable and highly accurate multiple fuel injections, even during extremely short injection pulse widths. This improves fuel delivery precision in the injector's very low fuel flow region while maintaining consistent performance throughout the entire operating range. In addition to improving combustion control, the system contributes to lower fuel consumption and reduces carbon monoxide (CO) and hydrocarbon (HC) emissions.

Major Components of the 500-Bar GDI Solution

The integrated fuel injection solution combines several key components that work together to deliver precise high-pressure fuel control across different operating conditions.

• 500-bar high-pressure fuel injector
• High-pressure fuel pump
• High-pressure fuel pressure sensor
• Electronic controller
• Control software
• Calibration and testing system

Validation Process Across Development Stages

UAES has validated the complete system through multiple engineering phases covering the full product lifecycle. The evaluation includes component manufacturing verification, complete system testing, engine calibration, vehicle calibration, and durability assessment. This comprehensive validation approach is intended to ensure consistent performance, long-term reliability, and production readiness before deployment in commercial passenger vehicles.

Vehicle Platform Compatibility

The 500-bar GDI solution has been developed for broad compatibility across modern passenger vehicle powertrain architectures. It supports hybrid electric vehicles (HEV), range-extended electric vehicles (REEV), and conventional internal combustion engine (ICE) passenger vehicle platforms, allowing manufacturers to apply the technology across multiple vehicle programs while preparing for stricter emission standards in China and European markets.

500-Bar GDI System Features and Applications

Frequently Asked Questions

What is the main advantage of UAES's new 500-bar GDI system?
The primary advantage of the new 500-bar gasoline direct injection system is its ability to improve combustion efficiency while helping vehicles comply with future China VII and Euro 7 emission standards. By combining high-pressure fuel atomization with CVO5 short-duration injection control, the system delivers more precise fuel injection, reduces soot particle formation, lowers fuel consumption, and decreases carbon monoxide and hydrocarbon emissions. It is also compatible with HEV, REEV, and ICE passenger vehicle platforms, making it suitable for a wide range of production applications.