Publication Date

6-12-2026

Document Type

Technical Report

First Advisor

Salehinia, Iman

Second Advisor

Lee, Eric

Department

Department of Mechanical Engineering

Abstract

This report presents the design, prototyping, and evaluation of an electronically operated throttle system for the NIU Supermileage internal combustion engine (ICE). The original mechanically actuated throttle experienced sticking, slippage, and inconsistent response, which reduced repeatability and driver confidence. To address these issues, the team developed a compact electronic throttle system using an Arduino nano, a linear potentiometer for driver input, and a servo motor to actuate the throttle valve. The system was integrated with custom mounting and a circuit system that enabled throttle response. Engineering analysis was used to estimate the torque required to actuate the throttle, with attention paid to spring resistance and flow torque. The prototype wiring was first verified on a breadboard and then transferred to a soldered proto-board for improved durability. Functional testing showed that the motor responded accurately to the input of the potentiometer and produced smooth motion throughout the full throttle range. Compared to the original mechanical design, the electronic system reduced slipping and sticking, improved repeatability, and ergonomics. The final design demonstrates a practical solution for improved throttle control and provides a basis for future refinement and long term vehicle integration.

Publisher

Northern Illinois University

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