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Powertrain Systems

Engine Management Systems

Delphi Multec® Electronic Fuel Injection

Delphi Multec® Electronic Fuel Injection (EFI) provides a complete engine management system (EMS) for small gasoline- and flexible fuel-powered engines. It is designed to help manufacturers meet exhaust and evaporative emissions requirements for small engines while also achieving targets for engine performance and fuel consumption. Delphi's Multec EFI provides manufacturers with a single, easy-to-manage, cost-competitive package of components that can be tailored to individual program requirements and price points.

Delphi's Multec EFI can include:

  • Engine control unit (ECU) with software and algorithms
  • Electronic fuel injection
  • Throttle control (including electronic governor control)
  • Air control
  • Ignition coil
  • Sensors and actuators
  • Electronic fuel pump
  • Evaporative emissions canister

Benefits

  • Components are optimized within a complete, cost-effective package to meet the manufacturer's performance objectives and price points
  • Delphi's Multec EFI can help reduce fuel consumption—up to 10-15% depending on the application
  • It assists in reducing exhaust emissions to help meet regulatory standards and reduces carbon monoxide emissions for better product safety versus conventionally carbureted systems
  • Compared to carbureted systems, Delphi's Multec EFI provides improved starting and overall performance over a wide range of environmental conditions (e.g. temperature and altitude), and better reliability
  • Electronic governor control provides improved speed control and reduced governor droop and hunt versus a mechanical governor
  • Delphi provides a complete software package and calibration tools
  • Delphi's single point of contact for the EMS makes it easy for the manufacturer to manage and implement the program
  • Delphi's experienced and knowledgeable EMS engineering support teams—with their systems development, calibration, and validation expertise—can provide fast response and enable the manufacturer to achieve fast time-to-market
  • Delphi's Multec EFI technology offers product image development and marketing opportunities for the manufacturer

The Delphi Multec EFI for motorcycles includes: (from top right, clockwise) evaporative emissions canister, mini-switching oxygen sensor, ignition coil, manifold absolute pressure sensor, engine temperature sensor, intake air temperature sensor, fuel injector, engine control module, throttle body with throttle position sensor and fuel module.

Delphi Multec® Electronic Fuel Injection Portfolio Summary

  Features and Benefits
 Engine Control Unit (ECU)
  • 16 bit
  • Small package size
  • Flexible mounting options
  • Manifold absolute pressure (MAP) or throttle position sensor (TPS) load
  • Electronic spark timing
  • Flexible fuel algorithms
  • Communication link for diagnostics and operator information display
  • Other features: immobilizer, rollover switches, altitude compensation and more
 Electronic Fuel Injector
  • With anti-plugging features
  • Flexible fuel compatibility (Ethanol, E85)
  • Hot fuel handling optimization
 Mechanical Throttle Body
  • Low cost option
  • Idle speed control option
  • Sealed shaft option
  • Integrated sensors
  • Throttle bore portfolio to match engine sizes
 Electronic Throttle Body
  • Enhanced responsiveness to a load change
  • Fewer components
  • Integrated sensors
  • Throttle bore portfolio to match engine sizes
 Fuel Module
  • Compact top- and bottom-mount in-tank modules
  • In-line modules
  • Designed with low current consumption
 Electronic Ignition
  • More reliable combustion versus magnetos
  • Enables electronic spark timing
  • Electronic protection and diagnostics for the coil
 Sensors and Actuators
  • Pressure
  • Engine and Air Temperature
  • Engine Crank Position
  • Compact designs
  • Multiple options for packaging flexibility
 Exhaust Oxygen Sensor
  • Isolated ground for added robustness
  • Enables closed-loop control for better emissions control
  • Allows gasoline-ethanol blended flexible fuel operation
  • Fast light off
 Evaporative Emissions Canister
  • Compact design
  • Flexible mounting options
  • Reduces evaporative emissions

Typical Applications

A Delphi Multec Electronic Fuel Injection engine management system is available for one- or two-cylinder, four-stroke gasoline and flexible fuel engines ranging from 10 hp to 30 hp.  Delphi Multec EFI enables the engines to operate on gasoline-ethanol blended fuels. Typical product applications include:

  • Motorcycles and scooters
  • Out-board marine engines
  • Power generators
  • Lawn tractors and mowers
  • All-terrain vehicles
  • Outdoor power equipment
  • Snowmobiles
  • Personal watercraft

Performance Advantages

Delphi's Multec Electronic Fuel Injection offers an easy and convenient way for a manufacturer of small engine products to implement a complete engine management system that can help meet exhaust and evaporative emissions standards, while enhancing engine performance and reducing fuel consumption. Delphi's unique understanding of the complete engine management system and its portfolio of major component development capabilities contribute to superior component design and a cost-competitive system. Delphi's engine management system products are recognized for high quality and superior performance.

The Delphi Advantage

Delphi has a long history of supplying gasoline engine management systems and components that have for many years helped global automotive manufacturers overcome market and regulatory challenges. Delphi's extensive experience in fuel injection systems development provides manufacturers of small engine products with a unique systems-level knowledge and analysis resource.

Delphi offers proven production experience for a wide range of small engine products including motorcycles, marine engines, and power equipment. Delphi also offers a global network of engineering and manufacturing resources and is positioned to respond quickly and efficiently with localized program support.