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Advanced PFI: The Economical, High-Performance Systems Approach
Technical Paper
2015-36-0392
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
With Advanced PFI, Bosch has demonstrated that gasoline port-fuel injection is becoming significantly more energy-efficient by means of innovative system development. Advanced PFI combines fuel pressure increase, twin injection, PFI scavenging, and open valve injection.
The use of Advanced PFI makes it possible to reduce consumption by 12%, with a corresponding decrease in CO2 emissions. The higher compression in the part-load range alone accounts for 2% of the reduction. The remaining 10% come from downsizing with turbocharging and PFI scavenging.
At the same time, Advanced PFI allows a reduction in hydrocarbons (HC) emissions. Thanks to more homogenous air-fuel mixture formation and reduced manifold wall fuel condensation, HC emissions fall by 20% in the test cycle.
And Advanced PFI also permits an increase in specific engine power output, with PFI scavenging achieving significantly higher low-end torque.
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Citation
Posselt, A., Mai, A., Leder, M., Salvio, R. et al., "Advanced PFI: The Economical, High-Performance Systems Approach," SAE Technical Paper 2015-36-0392, 2015, https://doi.org/10.4271/2015-36-0392.Also In
References
- A-PFI Bosch Media Service http://www.bosch-presse.de/presseforum/details.htm?txtID=6406&locale=en April 2015
- Hamada , Motohiko Dual Injectors to Boost Fuel Economy: The Future of Small Engines? Nikkei BP Japan Technology Report / A1405-054-009 April 2015
- Gasoline port fuel injection (PFI): with Advanced PFI even more energy-efficient Bosch Robert http://products.bosch-mobility-solutions.com/media/en/ubk_europe/db_application/downloads/pdf/antrieb/de_5/pfi_full_de.pdf April 2015
- Walther , Jochen ; Stefan , Kampmann ; Roger , Busch ; Martin Leder Approaches to achieve future Brazilian demands of SI engine powertrains Congresso SAE BRASIL 2013
- Gasoline port fuel injection (PFI) Bosch Robert http://products.bosch-mobility-solutions.com/en/de/powertrain/powertrain_systems_for_passenger_cars_1/gasoline_port_fuel_injection_22/gasoline_port_fuel_injection_23.html# April 2015
- FLEX FUEL Bosch Robert http://www.bosch.com.br/br/autopecas/produtos/injecao/flex_fuel.asp May 2015
- Leder , M.M. Unburned Ethanol Emissions Reduction Using a Fuel Heating System Engine-Expo 2014 Novi Michigan, USA
- Bosch apresenta alternativa à injeção direta de combustível Automotive Business May 2015