CSC Pi-Innovo OpenECU

The purpose of this project is to develop and implement connectivity between sensor inputs and a control system using a Pi Innovo OpenECU for future use controlling a two-stroke snowmobile engine. The goal for the summer team is to evaluate functionality of the engine control unit (ECU) using a simulated engine.

=Problem Definition= The University of Idaho Clean Snowmobile Challenge team (UICSC) is in need of a more advanced engine control platform to support advancements in combustion strategies and auxiliary components directly in the ECU (such as an experimental exhaust baffle for variable back-pressure, or catalytic converter light-off control).

Background
The current engine control unit (ECU) used for the UICSC team’s two stroke snowmobile engine is functional, but limiting in light of the CSC’s experimental nature. Implementing more sophisticated engine controls could improve efficiency, emissions, and performance. One example of this is using closed-loop-feedback fueling to reach desired engine operating conditions more reliably than with open-loop fueling. With the power of the Pi Innovo ECU, future powertrain projects developed by the team will be more easily coupled with engine control. Examples include projects previously attempted such as turbocharging and controlling backpressure with a butterfly valve. To complete this project, the senior design team must manage the ECU’s input signals and use a Simulink based controller to compute the appropriate outputs.

Deliverables
Summer 2020  Complete base control systems  Ability to control spark timing, fuel injection timing and quantity, ratio of fuel injected by injectors in series, stratified vs homogeneous injection based on engine speed and throttle position (n-alpha)

Ability to manipulate compensation maps for measurements such as piston head temperature, ambient pressure, ethanol percentage, etc.

Ability to drive E-TEC injectors  Complete base wiring  An organized, plug-and-play wiring harness that reaches functional parity with the wiring system for a Rotax 850cc two-stroke engine

An intuitive wiring diagram</li> </ul> </ul>

Specifications
=Design Considerations=

=Project Learning=

=Final Design=

=Validation=
 * Simulated validation
 * Validating functionality of the control systems with simulated inputs using Simulink
 * Validating functionality of the wiring system using signals generated by a JimStim

=Team Members=

=Additional Documentation=

Project Schedule



Meeting Minutes



Presentations



Client Interview