Presentation Title

Variable Stratification of Reactivity in Fuel Combustion with Newly Developed Biofuel

Location

Atrium

Session Format

Poster Presentation

Research Area Topic:

Engineering and Material Sciences - Mechanical

Co-Presenters, Co- Authors, Co-Researchers, Mentors, or Faculty Advisors

Martin Muinos

Spencer Harp

Remi Gaubert

Raymond Summerrow

Alexander Chestnut

Dr. Valentin Soloiu

Abstract

This new research implements a stratified fueling strategy called Reactivity Controlled Compression Ignition (RCCI) in a direct injection (DI) engine running on a newly developed biofuel called Carinata. Carinata is a crop that is cultivated mainly for its oil seeds and it can be abundantly found in Africa, and easily acclimatized in US. RCCI process delivers a low reactivity fuel into the combustion chamber by injecting it into the intake port which resulting in a Port Fuel Injection (PFI) process. In this study, Normal Butanol (n-butanol) is used as the low reactivity fuel that is introduced through PFI. N-butanol is a new low reactive fuel to be used in RCCI process. This novel fueling strategy lowers emissions in compression ignition engines by reducing the combustion temperature; this directly correlates to lower harmful emissions. Each fuel is being tested with 2 fueling strategies (with and without the implementation of RCCI) so the difference in engine properties and emissions due to RCCI can be observed. The DI engine has been instrumented and combustion analysis characteristics could be investigated and analyzed. These properties include ignition delay, apparent heat release, mass burnt, and emissions. A baseline test of using Ultra Low Sulfur Diesel (ULSD) was conducted to have a comparable reference for the Carinata tests. The results for ULSD using RCCI with a diesel to n-butanol ratio of 1:1, showed a very favorable decrease in Nitrous Oxide (NOx), Carbon Dioxide (CO2), and Soot. The RCCI process lowered NOx by 18%, CO2 by 10%, and Soot by 58% without gas after-treatment.

Keywords

Reactivity controlled compression ignition, Combustion control, Stratified reactivity

Presentation Type and Release Option

Presentation (Open Access)

Start Date

4-24-2015 10:45 AM

End Date

4-24-2015 12:00 PM

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Apr 24th, 10:45 AM Apr 24th, 12:00 PM

Variable Stratification of Reactivity in Fuel Combustion with Newly Developed Biofuel

Atrium

This new research implements a stratified fueling strategy called Reactivity Controlled Compression Ignition (RCCI) in a direct injection (DI) engine running on a newly developed biofuel called Carinata. Carinata is a crop that is cultivated mainly for its oil seeds and it can be abundantly found in Africa, and easily acclimatized in US. RCCI process delivers a low reactivity fuel into the combustion chamber by injecting it into the intake port which resulting in a Port Fuel Injection (PFI) process. In this study, Normal Butanol (n-butanol) is used as the low reactivity fuel that is introduced through PFI. N-butanol is a new low reactive fuel to be used in RCCI process. This novel fueling strategy lowers emissions in compression ignition engines by reducing the combustion temperature; this directly correlates to lower harmful emissions. Each fuel is being tested with 2 fueling strategies (with and without the implementation of RCCI) so the difference in engine properties and emissions due to RCCI can be observed. The DI engine has been instrumented and combustion analysis characteristics could be investigated and analyzed. These properties include ignition delay, apparent heat release, mass burnt, and emissions. A baseline test of using Ultra Low Sulfur Diesel (ULSD) was conducted to have a comparable reference for the Carinata tests. The results for ULSD using RCCI with a diesel to n-butanol ratio of 1:1, showed a very favorable decrease in Nitrous Oxide (NOx), Carbon Dioxide (CO2), and Soot. The RCCI process lowered NOx by 18%, CO2 by 10%, and Soot by 58% without gas after-treatment.