1998-08-11

Electronic Fuel Injection for Hydrogen Fueled Internal Combustion Engines 981924

This paper describes an evaluation of a series of commercially available natural gas fuel injectors, originally designed for heavy-duty diesel application, for use with hydrogen fuel in an electronic fuel-injected internal combustion engine. Results show that sonic flow, pulse-width-modulated electronic gaseous fuel injectors provide accurate and stable metering of hydrogen gas at fuel pressures between 25 and 200 psig. A linear flow rate of hydrogen was observed with a low standard deviation error during pulse width modulation. Plots of flow rate of hydrogen (mg/injection) versus pulse width (PW) are presented for inlet pressures from 25 to 200 psig for selected injectors. In addition, injector response tests were conducted and found to have time delays (time it takes the injector to open) between 2.6 ms and 2.3 ms at 25 psig inlet pressure. Time-delay times increased linearly between 4.0 ms and 3.0 ms at 200 psig. In addition, leak tests were performed on all injectors and the measured leak rates were found to be insignificant. The precise metering of fuel is critical for the performance of hydrogen powered engines. The performance of the injectors evaluated was within the necessary tolerances for hydrogen applications with internal combustion engines.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 18% 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

Hydrogen ICE Vehicle Testing Activities

2006-01-0433

View Details

TECHNICAL PAPER

Development of a Variable Blend Hydrogen-Natural Gas Internal Combustion Engine. Part 1 - Sensor Development

1999-01-2899

View Details

TECHNICAL PAPER

Cycle-Resolved Hydrogen Flame Speed Measurements with High Speed Schlieren Technique in a Hydrogen Direct Injection SI Engine

942036

View Details

X