Browse Publications Technical Papers 2007-01-1075
2007-04-16

Rapid Fuel Injector Re-Pressurization 2007-01-1075

A fuel system design objective is to have the fuel injection pressure at target pressure by the time of the first injection. In most cases, a vapor and air space forms in the highest and hottest part of the fuel injector supply as the fuel system cools following engine-off. Upon key-on, the fuel pump needs to collapse the fuel vapor and compress any air before fuel pressure can build thus delaying fuel injector re-pressurization. An inventive solution to speed re-pressurization is described. It effectively eliminates the need to collapse the fuel vapor and compress any air in the first few tenths of seconds of fuel injection re-pressurization. The factors that affect fuel injection re-pressurization time are discussed.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Development of Discharge Pump Type Fuel Injection System for Small Two-Wheel Vehicles

2005-32-0022

View Details

TECHNICAL PAPER

Study on Pressure Fluctuation of a Constant Pressure Fuel System

2017-01-0828

View Details

TECHNICAL PAPER

Beyond Euro VI - Development of A Next Generation Fuel Injector for Commercial Vehicles

2014-01-1435

View Details

X