How are Denso fuel injectors classified ?
Denso is a leading manufacturer of fuel injectors, supplying both OEM (Original Equipment Manufacturer) and aftermarket parts. Denso fuel injectors are classified based on several factors, including design, application, and technology. Below is a general classification of Denso fuel injectors:
1. By Fuel Type
Gasoline Fuel Injectors – Used in gasoline/petrol engines (Port Fuel Injectors & Direct Injectors).
Diesel Fuel Injectors – Used in diesel engines (Common Rail, Unit Injectors, etc.).
2. By Injection System
Port Fuel Injection (PFI) Injectors – Spray fuel into the intake manifold.
Gasoline Direct Injection (GDI) Injectors – Spray fuel directly into the combustion chamber.
Common Rail Diesel Injectors – High-pressure injectors for modern diesel engines.
Unit Injectors – Used in older diesel engines where each injector has its own pump.
3. By Design & Technology
Solenoid-Type Injectors – Use an electromagnetic solenoid to control fuel flow (common in gasoline engines).
Piezoelectric Injectors – Use piezoelectric crystals for faster response (common in high-performance and diesel engines).
Multi-Hole Injectors – Have multiple spray holes for better atomization.
Air-Shrouded Injectors – Mix fuel with air for better combustion efficiency.
4. By Vehicle Application
OEM Injectors – Designed for specific vehicle makes/models (e.g., Toyota, Honda, Ford).
Aftermarket/Performance Injectors – Upgraded versions for tuning or high-performance applications.
5. By Flow Rate & Resistance
Low Impedance (2-5 Ohms) – Typically high-performance or racing injectors.
High Impedance (12-16 Ohms) – Common in most stock vehicles.
Popular Denso Fuel Injector Series
Denso Long & Short Injectors – Different sizes for various engine configurations.
Denso EV Series – High-efficiency gasoline injectors.
Denso GDI Injectors – For direct-injection gasoline engines.
Denso Common Rail Injectors – For modern diesel engines (e.g., trucks, SUVs).