2005 michigan tech clean snowmobile greg davis david meyer advisor: dr. bernhard bettig...
TRANSCRIPT
2005 Michigan Tech2005 Michigan TechClean SnowmobileClean Snowmobile
Greg DavisGreg DavisDavid MeyerDavid Meyer
Advisor: Dr. Bernhard BettigAdvisor: Dr. Bernhard Bettig
Incorporation of a High Performance, Four-Cylinder, Four-Stroke Motorcycle Engine into a Snowmobile Application
ConceptConcept
Build a high performance, clean, and quietBuild a high performance, clean, and quiet
snowmobile that appeals to a wide audience snowmobile that appeals to a wide audience
and can be adapted to multipleand can be adapted to multiple
applicationsapplications
High PerformanceHigh Performance
Engine – 2003 Honda CBR954RR Engine – 2003 Honda CBR954RR Drive system – Semi-direct drive with Drive system – Semi-direct drive with
crankshaft mounted output systemcrankshaft mounted output systemChassis – 2004 Polaris Pro-XChassis – 2004 Polaris Pro-X
EngineEngine
Honda CBR954RRHonda CBR954RR 4-Stroke4-Stroke 4-Cylinder4-Cylinder 4 valves per cylinder4 valves per cylinder Electronic Fuel Electronic Fuel
InjectionInjection Naturally AspiratedNaturally Aspirated
Snowmobile AdaptationSnowmobile Adaptation
Crankshaft adapter Crankshaft adapter and output shaft and output shaft
Engine side cover Engine side cover to support output to support output shaftshaft
Drive SystemDrive System
Micro Belmont Micro Belmont primary clutchprimary clutch
Team Industries rapid Team Industries rapid reaction roller reaction roller secondary clutchsecondary clutch
FAST gearboxFAST gearbox Shaft support armShaft support arm
ChassisChassis
Over the motor Over the motor steering systemsteering system
Rider position and Rider position and ergonomicsergonomics
Suspension and Suspension and rider comfortrider comfort
CleanClean
3-way Metal substrate catalytic exhaust 3-way Metal substrate catalytic exhaust treatmenttreatment
Honda PAIR valveHonda PAIR valveFuel injection optimizationFuel injection optimization
Catalyst optimizationCatalyst optimizationReduced fuel consumptionReduced fuel consumption
EmissionsEmissions
Fuel Injection Setup
02468
1012141618
5 4 3
Mode
Air
/Fu
el R
atio
Stock HondaSystem
Addition ofCatalyst only
Catalyist with FuelInjection Tuning
Carbon Monoxide Emissions
0
2
4
6
8
10
12
14
5 4 3
Mode
Qu
anti
ty
Stock HondaSystem
Addition ofCatalyst only
Catalyist withFuel InjectionTuning
NOx Emissions
0
100
200
300
400
500
600
700
800
900
1000
5 4 3
Mode
Qu
anti
ty Stock Honda System
Addition of Catalyst only
Catalyist with Fuel InjectionTuning
Hydro Carbon Emissions
0
100
200
300
400
500
600
700
800
5 4 3
Mode
Qu
an
tity
Stock HondaSystem
Addition ofCatalyst only
Catalyist withFuel InjectionTuning
Percent Reduction Emissions
As compared to stock Honda System
Emissions Setup Mode HC CO NOx
Catalyst 5 82 27 100
4 16 -290 99
3 10 -62 98
Catalyst 5 95 98 78
w/ FI tuning 4 96 98 98
3 95 96 80
QuietQuiet
Custom mufflerCustom mufflerQuiet trackQuiet trackUnder hood sound absorption foamUnder hood sound absorption foam Integrated motor mount bushings Integrated motor mount bushings
Muffler DesignMuffler Design
Frequency analysis Frequency analysis completedcompleted
Peak frequencies Peak frequencies identifiedidentified
Combination reactive Combination reactive and absorptive and absorptive mufflermuffler
Muffler tuned to Muffler tuned to eliminate peak eliminate peak frequenciesfrequencies
Further Noise ReductionFurther Noise Reduction
Various tracks tested Various tracks tested on simulation standon simulation stand
Sound absorption Sound absorption foam used to reduce foam used to reduce under hood noiseunder hood noise
Motor mount Motor mount bushings integrated to bushings integrated to reduce vibration reduce vibration
Environmental PerspectiveEnvironmental Perspective
CleanCleanGreater than 95% reduction in HC and COGreater than 95% reduction in HC and CO22
Greater than 78% reduction in NOxGreater than 78% reduction in NOx Increased Fuel Economy, 14.5 MPGIncreased Fuel Economy, 14.5 MPGReduction in burned oilReduction in burned oil
QuietQuiet35dB reduction in exhaust noise35dB reduction in exhaust noiseSuspension and track noise reductionSuspension and track noise reduction
Operator PerspectiveOperator Perspective
Fun to Ride Due to High Specific Power and Fuel Fun to Ride Due to High Specific Power and Fuel EconomyEconomy 32.14 W/N32.14 W/N Increased Fuel Economy, 14.5 MPGIncreased Fuel Economy, 14.5 MPG
Low MaintenanceLow Maintenance Seasonal Oil Change, Reduced Spark Plug FoulingSeasonal Oil Change, Reduced Spark Plug Fouling High DurabilityHigh Durability
Drive System, Four-Stroke ReliabilityDrive System, Four-Stroke Reliability
AffordabilityAffordability Average of $110 Savings per Season in Petroleum ProductsAverage of $110 Savings per Season in Petroleum Products Fuel cost savings due to higher fuel economyFuel cost savings due to higher fuel economy
Dealer/Outfitter PerspectiveDealer/Outfitter Perspective
AffordableAffordable $1314 additional technology per CSC TICA Form$1314 additional technology per CSC TICA Form
Reduced MaintenanceReduced Maintenance Seasonal Oil Change, Reduced Spark Plug FoulingSeasonal Oil Change, Reduced Spark Plug Fouling Less Cost of MaintainingLess Cost of Maintaining
Easy tunabilityEasy tunability Simple clutch tuning transforms a touring sled into a Simple clutch tuning transforms a touring sled into a
high performance machine in minutes for minimal costhigh performance machine in minutes for minimal cost Increased DurabilityIncreased Durability
Drive System, Four-Stroke ReliabilityDrive System, Four-Stroke Reliability