2018 IC Design Presentation Clean Snowmobile Enterprise: Michigan

2018 IC Design Presentation Clean Snowmobile Enterprise: Michigan

2018 IC Design Presentation Clean Snowmobile Enterprise: Michigan Tech-IC Presenters: Shane Severn Paul Hanafin 3/2018 2018 IC Design Presentation Agenda Platform Background Engine Control Strategy Engine Tune Development Emissions Noise Reduction Strategy Sound Profile Characterization

Solution Implementation Conclusions 3/2018 2018 IC Design Presentation Competition Snowmobile Chassis: 2016 Yamaha RS Venture TF BAT Engine: 1049cc Yamaha Genesis Four-Stroke Liquid Cooled 3 Cylinder Track: Ported Camso Crossover 151 x 15 2.52 pitch

3/2018 2018 IC Design Presentation Engine Calibration Development Acquiring Stock Engine Calibration CPS, MAP, and TPS Sensors Ignition and injector waveforms Developing New Engine Calibration MoTec M130 ECU with Development License 5 Target Modes 3/2018 Mode

Crankshaft Speed (rpm) Crankshaft Torque (lb-lbs) 1 8300 44 2 7055 22.44

3 6225 14.52 4 5395 8.36 5 Idle 0 2018 IC Design

Presentation Tuning With MoTec Electronic Throttle Control Complete Flex Fuel Capabilities Closed Loop Fueling Lambda to CAN (Lambda 1 Target) Set Fuel Aim Table Programmable Bosch Display Live updates on snow Manifold Pressure Lambda Ethanol Analyzer 3/2018 2018 IC Design Presentation

Emissions Three Way Metallic Catalytic Converter Overall improvement in CO and UHC in all 5 modes NOx Emissions improvement in modes 2-5 3/2018 2018 IC Design Presentation Noise Reduction Strategy: Sound Profile Characterization Intake Attenuation Overkill Intake

Exhaust Attenuation Overkill Exhaust Chassis Attenuation Soundown Track Skirts 3/2018 2018 IC Design Presentation Overkill Results: Bogey Contributions Intake/Exhaust Contributions Track Contributions 3/2018

2018 IC Design Presentation Intake Solution: Intake Quarter Wave Resonator Tuned to 265 Hz Heating elements used to combat temperature induced performance fluctuations Improvement of 3.1 dBA at 265 Hz 3/2018 2018 IC Design Presentation CFM

Back Pressure (iwg) With Catalyst 75.53 4.89 50.34 2.24 OEM 75.13

2.65 50.54 1.22 Exhaust Solution: Flow Restriction Exhaust Quarter Wave Resonators Two resonators tuned to frequencies 265 Hz and 397.5 Hz Improvement of 3.1 dBA at 265 Hz Improvement of 2.4 dBA at 397.5 Hz 3/2018 2018 IC Design

Presentation Track/Skid Solution: Ported Camso Crossover 151 x 15 Bogey configuration Offset Removed Improvement of 2.1 dBA at 488 Hz (Track) Improvements of 1.3, 4.0, and 2.4 dBA at 100, 200, and 400 Hz (Bogey) 3/2018 2018 IC Design Presentation Overall Noise Reduction: 1.5

dBA Bogey Improvements Intake/Exhaust Improvements Track Improvements 3/2018 2018 IC Design Presentation Conclusions Isolated sound emissions from various components

Developed engine calibration with MoTec ECU Reduction in Co, UHC, and NOx for fewer emissions Implemented quarter wave resonators in the intake and exhaust to reduce engine noise Altered bogey wheel configuration and installed a ported Camso Crossover track 3/2018 2018 IC Design Presentation Questions? 3/2018 2018 IC Design Presentation

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