Powertrain Systems

Delphi Electronic Throttle Controls and Throttle Bodies for Small Engines control airflow to the engine. They feature a butterfly valve in the throttle body which opens and closes the passage into the intake manifold to increase or decrease the volume of incoming air.

• Delphi Electronic Throttle Controls are regulated by an electronic signal from the engine management system. They are designed to replace mechanical governor systems with electronic control capability. Delphi's Electronic Throttle Controls offer more precise system air control versus mechanical systems to enable the application of advanced engine technologies that can help improve engine efficiency. They can be tailored to meet customer needs for airflow, response time and system feedback.
• Delphi Mechanical Throttle Bodies offer a simpler alternative to electronic systems while maintaining excellent durability and reliability. They are mechanically linked to the accelerator and are constructed of aluminum or composite materials. Delphi Mechanical Throttle Bodies are also designed to provide the manufacturer with packaging flexibility.

Delphi Mechanical Throttle Body for Small Engines

Delphi Electronic Throttle Control Benefits

• No throttle cable routings provides enhanced packaging flexibility
• Non-contact sensor option provides increased durability and reliability compared to contact sensor designs
• Contact sensor is physically separated from the gearbox to avoid dust contamination of the sensor and reduce shaft position variation for improved warranty performance
• Stiff casting design helps minimize vibration for improved motor and sensor durability
• No metal-to-metal contact in the gear train helps reduce contamination in the gear train and the sensor
• Various bearing configurations are available (needle, ball, and brush) to meet specific customer design requirements
• Lip seal options improve sealing to help avoid moisture penetration
• Electronic technology enables the engine to respond faster to load change (compared with mechanical governor systems)
• Electronics enable flexibility in program application; the same throttle body could be used in multiple engine programs
• Electronic throttle bodies offer the potential for easier assembly by the manufacturer
• This "high tech" feature can help enhance the technology imagery of the manufacturer's small engine product
• Available in a wide range of bore sizes

Delphi Mechanical Throttle Body Benefits

• Offer integrated idle air control options, including an Idle Air Control Valve (IACV) or an Idle Air Control Bypass adjustment screw
• Available in either aluminum or composite material and a wide range of bore sizes
• Composite mechanical throttle bodies offer increased resistance to corrosion and a significant mass reduction versus aluminum designs
• Multiple lever or cam linkage interfaces are available
• Optional integrated throttle position sensor (TPS) can be used for more advanced engine control and diagnostics
  

Typical Applications

Delphi Electronic Throttle Controls and Throttle Bodies for Small Engines are designed for one- and two-cylinder (In-Line and "V") gasoline engines, from 10 hp to 42 hp. They can also be used in flexible fuel applications.

Delphi Electronic Throttle Controls and Throttle Bodies for Small Engines can be used for motorcycles, motor scooters, commercial products such as lawn mowers and stationary power generators, power sports products such as personal all-terrain vehicles, and marine engines.

Performance Advantages

Delphi is leveraging its experience as a leading automotive throttle body and electronic throttle control manufacturer to develop the next generation of electronic throttle controls for non-automotive engine applications. Delphi Electronic Throttle Controls eliminate mechanical governor systems while, as part of an electronic fuel injection system, they help increase fuel economy up to 10-15 percent depending on application. They offer increased packaging flexibility and significant improvement in engine air control compared to conventional carbureted systems.

Delphi's Mechanical Throttle Bodies for small engine non-automotive applications are integral to electronic fuel injection systems, which offer a significant improvement in performance, fuel economy and emissions reduction compared to conventional carbureted systems.

The Delphi Advantage

Delphi has long been a leading manufacturer of carburetor, throttle body injection, and mechanical and advanced electronic throttle control systems. Delphi has a long history of manufacturing throttle bodies for the automotive industry, with many millions on the road today. As a global leader in engine management technology, Delphi integrates air and fuel management systems, and the associated electronic controls and sensors to create complete engine management systems designed to help manufacturers around the world meet emissions requirements, increase fuel economy and improve performance. These systems can enhance the value of the product and increase consumer satisfaction.

Delphi manufactures throttle bodies at facilities in the United States, Brazil, China, Korea, Poland, India and Mexico, with additional developmental research and support facilities worldwide. This global presence helps Delphi provide exceptional on-time delivery performance. Delphi offers proven production experience for a wide range of non-automotive engine products including motorcycles, marine engines and power equipment.