Delphi launches next-gen diesel and gas injection systems at IAA 01 October 2014

Delphi Automotive launched a range of modular diesel common rail systems for medium-duty applications as well as a high-pressure direct injection (HPDI) natural gas injector for heavy-duty applications at IAA, Hanover (25 September to 2 October).

The firm also revealed plans for its next-generation heavy- and medium-duty fuel systems, promising significantly improve fuel economy.

Steve Gregory, Delphi Diesel Systems managing director, says that the new common rail system – due for production in 2016 – delivers improved fuel control, with pressures up to 2,400 bar, to maximise the burn and enhance emission performance. It's also modular to allow for scalability and integration with existing engines.

Based on Delphi's latest low-leakage design, the system's new solenoid injectors also enable very small separation between injection events, so furth4er improving on fuel precision.

"This system is designed to help vehicle and engine manufacturers provide the excellent fuel economy, low noise, reliability and long service life required by operators of medium duty vehicles worldwide," states Gregory.

Meanwhile the new HPDI natural gas injector (also due on first trucks in 2016) is a second generation device, co-developed with Westport Innovations – and again is claimed to offer enhanced fuel economy.

As for Delphi's next-generation heavy-duty fuelling technologies, the firm says it will build on its three new F2 (F2P, F2E, F2R) diesel fuel injection systems by further improving flexibility and hence supporting a evolving powertrains.

"Our F2 systems are already working at up to 2,700 bar and are designed for operation at up to 3,000 bar," comments David Draper, Delphi director of engineering for commercial vehicles.

"Our next systems will deliver improved hydraulic efficiency, enhanced robustness to fuels and contamination, as well as smaller, lighter valves that enable even faster opening and closing, producing consistent and increased multiple injection capabilities."

At IAA, Delphi previewed the plan by debuting a patented injector (DFI 21) and new fuel pump modules developed for next-generation commercial vehicles' fuel injection systems.

"Our engineers at are also looking at tighter integration with the engine to provide substantial weight and space savings by designing the fuel system and the major engine components with increased commonality," says Draper.

Brian Tinham

Related Companies
Delphi Diesel Systems

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