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.
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
