GDI Fuel Systems

Demand for gasoline direct injection (GDi) technology is continuing to grow and as one of the world's leading suppliers and developers of GDi fuel injection systems we are perfectly positioned to help our customers take advantage of this exciting opportunity.

Having been first to market with 350 bar GDi, we have now developed a high efficiency 500+ bar solution which is designed to minimize load on the engine valvetrain whilst delivering class leading performance.

GDi Fuel Pumps

Overview

The Delphi pump is an engine driven single piston fuel pump providing high pressure for GDi engine applications. It exists in 2 versions, at 350bar and 500+bar, to cover the different market needs.

Download Delphi_GDi Fuel Pump

Features / Benefits

Virtually eliminates Plunger/Seal leak
Cranking pressure rise improved
Efficiency improved, particularly at low rpm
Durable in various run environments
Allows for pump/cam downsizing

500+bar for compliance with most stringent emissions regulations
Packaging flexibility
Corrosive fuel robustness – DLC coated IV assembly & PRV Seat, ceramic ball
Fuel compatibility E0 – E100, M15
The pump family offers full range of plunger sizes; 6, 7, 8mm up to 600bar, 10mm up to 350bar, 9mm up to 500bar
GFP2 and Plunger Ring Seal (PRS) is the most efficient GDI pump in the market
Low mass – approx. 720 grams
Low pressure pulsations – due to different accumulator options
Benchmark noise level: < 53 dB-A (750erpm, 5MPa)
In production since 2016 at 350bar, SOP in 2025 at 500bar

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GDi Fuel Injectors

Overview

M16 injector family:

ECU controlled fuel injector providing pressurized quantity of fuel for GDi engines

M16e: up to 400bar system operating pressure
M16: 500+bar system operating pressure

Download Delphi_GDi Injector

Features / Benefits

Extremely flexible packaging for central and side engine mounting applications, hanging or seated injector in cylinder block for both 6 and 7,5mm tip diameter
Similar packaging for easy upgrade from M16 to M16
Corrosive fuel robustness including DLC coated ball option
Flexible fuel compatibility (E0 – E100/M15)
M16 injector family offers full range of Static flow
- M16e: from 10 to 37g/s at 350bar
- M16: from 10 to 40g/s at 500bar
Shot-to-shot and multi-pulse optimized capability
Low pressure pulsations – due to customized inlet fuel orifice
Ability to deliver accurate multi injection at every operating pressure
Capable to optimize flow and spray to meet application requirements with non-thermal, laser drilling of nozzle holes
Low part to part dynamic flow variation and pronounced electrical signal for effective close loop correction for very low injection masses
Optimized magnetic performance and low drive wave form energy
Optimized design for low noise and low stress (low mass armature)
Market leader with 400bar capable product

Benefits of Armature Guided Concept:

Maximize magnetic efficiency
Durable in various operational environments
Better closed loop closing detection
Compatible with large static flow range

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GDi Fuel Rails

Overview

Our GDi rails utilize the best design and manufacturing practices to store fuel at high pressure ready for injection. Our experienced engineering team is highly skilled in optimizing the design of the rail to ensure minimal fluctuations in pressure between individual injections, which is crucial in optimizing engine performance.

Features / Benefits

One piece forged stainless steel fuel rail
High crashworthiness due to single piece construction
Capable of infinite life fatigue resistance at 600 bar operating pressure
Design optimization for low noise, low stress and low cost
Available as a separate component or as an assembly with injectors pre-installed

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Hydrocarbon Sensor Gen. 5

Overview

HCSG5 uniquely uses ultrasonic measurement for accurate, drift-free hydrocarbon detection.

Features / Benefits

Non-contact measurement – Hermetically isolated sensor elements prevent degradation and ensure long-term durability.
Drift-free accuracy – Stable signals unaffected by adsorption-related variables, guaranteeing reliable performance.
Flexible integration – Sensor can be integrated directly into the EVAP canister for monitoring canister load.
Smart Purge/Load Control – continuously monitors and outputs real-time hydrocarbon concentration data from the EVAP.

EVAP canister load monitoring - active monitoring of the level of hydrocarbon loading in the evaporative canister, especially in Hybrid Vehicles.
EVAP canister purge monitoring - more efficient hydrocarbon combustion during purge through concentration monitoring — reducing emissions and enhancing engine efficiency.

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GDI Fuel Systems

GDi Fuel Pumps

Overview

Features / Benefits

GDi Fuel Injectors

Overview

Features / Benefits

GDi Fuel Rails

Overview

Features / Benefits

Hydrocarbon Sensor Gen. 5

Overview

Features / Benefits

Commercial and Passengers Light Vehicles

Commercial Vehicles and Industrial Applications