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Delphi Multec GDi Multi-Hole Fuel Injectors

Delphi Multec GDi Multi-Hole Fuel Injectors
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Delphi Multec GDi Multi-Hole Fuel Injectors - 1

POWERTRAIN SYSTEMS Delphi Multec® GDi Multi-Hole Fuel Injectors Delphi Multec® GDi Multi-Hole Fuel Injectors are designed for homogeneous combustion gasoline direct injection engine applications. This family of flexible packaging and performanceoptimized injectors features an inwardly opening valve group and a multi-hole spray generator. The Multec 10 GDi Injector is capable of high pressure, up to 200 bar nominal system pressure with maximum 230 bar. The Multec 12 GDi Injector is capable of 200 bar nominal pressure with maximum pressure of 260 bar. Additional enhancements are available with the Multec 12.1 GDi Injector, which offers improved high pressure, multi-pulse operation of 250 bar nominal and 320 bar maximum, and reduced minimum fuel capability. Moving mass emits 1 dB lower acoustic noise than the rest of the industry Excellent fuel deposit robustness Valve group provides PZEV-capable fuel seal Flexible spray pattern with low penetration reduces fuel impingement on cylinder walls and allows flexible mounting Corrosion resistance, flow performance, and linear range to accommodate the requirements of ethanol-blended fuels Magnetic circuit is compatible with 50 V to 65 V boost voltage Decoupled armature allows up to 260 bar operating pressure with minimal driver energy Faster response times allow smaller injection quantity and greater working flow range Can operate with dwell times as low as 0.5 msec during multiinjection operation for Euro 6 particulate emissions number Multec 12 Injector can operate with dwell times as low as 0.5 msec during multi-injection operation for Euro 6 particulate emissions. Multec 12.1 can operate at 0.4 msec dwell time Multec 12.1 offers reduced energy consumption Delphi Multec® GDi Multi-Hole Fuel Injector Typical Applications Delphi Multec GDi Multi-Hole Fuel Injectors can be applied to any size gasoline engine, from small displacement turbocharged engines to large displacement engines, including central mount applications. The small particles in the spray allow optimum charge distribution for reduced emissions on cold start and for future combustion processes such as gasoline homogeneous charge compression ignition (HCCI). www.delphi.com | © Delphi. All rights reserved. | The Delphi Multec® GDi Multi-Hole Fuel Injector tip is designed for fuel deposit robustness.

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Delphi Multec GDi Multi-Hole Fuel Injectors - 2

Delphi Multec® GDi Multi-Hole Fuel Injectors Targeted Performance Specifications Static flow rate Closing response time Opening response time Fuel pressure Qmin flow at 100 bar, 7.2 g/sec static flow, 3 sigma D32 sauter mean diameter (SMD) DV90 0 after inject (no bounce) Cone angle as required by combustion Multec 12 Injector Up to 20 g/sec 0.4 msec 0.4 msec 30 to 260 bar 5.0 mg/pulse 7 µm (at 200 bar) 16 µm (at 200 bar) No bounce at close 40° to 90° Multec 12.1 Injector Up to 20 g/sec 0.4 msec 0.4 msec 30 to 300 bar 3.5 mg/pulse (no compensation) 6 µm (at 300 bar) 14 µm (at 300 bar) No...

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