Automated Throttle Control System

Location

CSU 255

Start Date

12-4-2022 10:00 AM

End Date

12-4-2022 11:00 AM

Student's Major

Automotive and Manufacturing Engineering Technology

Student's College

Science, Engineering and Technology

Mentor's Name

Gary Mead

Mentor's Department

Automotive and Manufacturing Engineering Technology

Mentor's College

Science, Engineering and Technology

Description

While automotive engines have been able to control emissions better using fuel injection and feedback with an oxygen sensor in the exhaust, small engines are still carbureted with no oxygen sensor feedback. With no feedback, it is hard to control emissions. For emissions testing small engines, 40 CFR § 90 is followed. This CFR states a 6 mode test is to be done. Modes 1-5 are at wide open throttle with 100%, 75%, 50%, 25%, and 10% load. The 6th mode is at idle with no load, as shown in Figure 1. below and in Appendix A. Even with these tests, it doesn’t truly show how much emissions a small engine produces in the real world. Transient tests could be made possible by using an automated throttle, which would simulate a more real world situation than what the EPA test requires. In addition to transient tests, an automated throttle could be used to switch between mode 5 and 6 on the EPA 6 mode test. Using the current testing setup at MNSU, the throttle has to moved manually. This is a safety hazard that needed to be fixed.

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Apr 12th, 10:00 AM Apr 12th, 11:00 AM

Automated Throttle Control System

CSU 255

While automotive engines have been able to control emissions better using fuel injection and feedback with an oxygen sensor in the exhaust, small engines are still carbureted with no oxygen sensor feedback. With no feedback, it is hard to control emissions. For emissions testing small engines, 40 CFR § 90 is followed. This CFR states a 6 mode test is to be done. Modes 1-5 are at wide open throttle with 100%, 75%, 50%, 25%, and 10% load. The 6th mode is at idle with no load, as shown in Figure 1. below and in Appendix A. Even with these tests, it doesn’t truly show how much emissions a small engine produces in the real world. Transient tests could be made possible by using an automated throttle, which would simulate a more real world situation than what the EPA test requires. In addition to transient tests, an automated throttle could be used to switch between mode 5 and 6 on the EPA 6 mode test. Using the current testing setup at MNSU, the throttle has to moved manually. This is a safety hazard that needed to be fixed.

Recommended Citation

Benson, David. "Automated Throttle Control System." Undergraduate Research Symposium, Mankato, MN, April 12, 2022.
https://cornerstone.lib.mnsu.edu/urs/2022/oral-session-02/4