Piezoelectric gasoline fuel injectors are high-performance Gasoline Direct Injection (GDI) injectors that use piezoelectric actuators instead of traditional solenoids. These injectors offer ultra-fast response times, finer fuel atomization, and multiple injection events per cycle, making them ideal for high-performance and high-efficiency engines.
Common Gasoline Piezoelectric Injectors:
- Bosch HDEV5 & HDEV6 Piezo Injectors
- Used in BMW (e.g., N54, N63, S55 engines), Mercedes-AMG, and some VW/Audi models.
- High injection pressure (up to 350 bar / 5000 psi).
- Extremely fast switching times for precise fuel delivery.
- Continental (Siemens VDO) Piezo Injectors
- Found in BMW B58, Mercedes M276 & M177, and some Audi/Porsche engines.
- Allows for multiple injections per cycle, improving combustion efficiency and reducing emissions.
- Denso Piezo GDI Injectors
- Used in some Toyota, Lexus, and Subaru D-4S direct injection systems.
- Often paired with dual-injection (GDI + PFI) setups.
Advantages of Piezoelectric Gasoline Injectors:
- Ultra-fast response times – Faster than solenoid-based injectors, enabling precise fuel metering.
- Better atomization – Creates a finer mist for more efficient combustion.
- Multiple injection events – Improves power, efficiency, and emissions.
- Higher injection pressures – Often exceeding 350 bar (5000+ psi), compared to ~200 bar for standard GDI injectors.