Industry/University Collaboration at the University of Michigan-Dearborn: A Focus on Relevant Technology

https://deepblue.lib.umich.edu/bitstream/2027.42/154104/1/kampfner1996.pd

Industry/University Collaboration at the University of Michigan-Dearborn: A Focus on Relevant Technology

https://deepblue.lib.umich.edu/bitstream/2027.42/154105/1/kampfner1997.pd

Fueling System Control and Exhaust Emissions from Natural Gas Fueled Engines

13-19<span style="font-size:14.0pt;line-height: 115%;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:black;mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:="" hi"="" lang="EN-IN">The use of natural gas as a fuel for spark ignition engines is not new. But recently there has been an increased interest in natural gas as a fuel for lean-burn SI engines because of the potential to reduce exhaust emissions. While lean-burn technology has been used in heavy-duty, turbocharged natural gas engines in power industry, only recently it has been considered for light-duty applications. The performance of lean-burn engines for light-duty vehicles is highly dependent on fueling system and its control. This paper investigates the impact of natural gas fueling arrangement on engine stability and exhaust emissions of lean-burn <span style="font-size: 14.0pt;line-height:115%;font-family:" times="" new="" roman";mso-fareast-font-family:="" fd2731499-identity-h;color:black;mso-ansi-language:en-in;mso-fareast-language:="" en-in;mso-bidi-language:hi"="" lang="EN-IN">SI <span style="font-size:14.0pt; line-height:115%;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:black;mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:="" hi"="" lang="EN-IN">engines. Two types of fueling arrangements were investigated: a mixer type system and an electronic port injection. Port injection system resulted in better engine performance with regard to exhaust emissions and variability in engine load than the mixer system. Catalyst performance for exhaust treatment was affected by fueling arrangement, operating conditions and exhaust gas temperature.</span