KRM motorcycle engines
EPA certification records list 39 highway motorcycle engine families from KRM, model years 2006–2017. Rated power ranges from 3 to 60 kW, median 20 kW. All listed families displace 49 cc. The most families were certified in 2009 (5).
Engine families39
Engine models15
Model years2006–2017
Power range3–60 kWmedian 20 kW
Displacement49 cc – 49 cc
Rank in category#32of 108 makers by families
Power distribution
Number of engine families by rated power.
Families certified per year
Technical mix
Fuel
Gas39
Configuration
43227
Cylinders
1 cyl102 cyl29
Most certified engine models
America, LLC 20095America, LLC 20085America, LLC 20074Gv2503Gv6503America, LLC 20133America, LLC 20113America, LLC 20103Gv700C2America, LLC 20122America, LLC 20062Gd2501
Engine families
| Family | Model | Year | Displacement | Power | Fuel |
|---|---|---|---|---|---|
HHYOC.249GD2 | Gd250 | 2017 | — | 21 kW | Gas |
HHYOC.249TBI | Gv250 | 2017 | — | 18 kW | Gas |
HHYOC.647TBI | Gv650 | 2017 | — | 54 kW | Gas |
GHYOC.249TBI | Gv250 | 2016 | — | 18 kW | Gas |
GHYOC.647TBI | Gv650 | 2016 | — | 54 kW | Gas |
GHYOC.678GVC | Gv700C | 2016 | — | 46 kW | Gas |
FHYOC.249TBI | Gv250 | 2015 | — | 18 kW | Gas |
FHYOC.647TBI | Gv650 | 2015 | — | 54 kW | Gas |
FHYOC.678GVC | Gv700C | 2015 | — | 46 kW | Gas |
EHYOC.249TBI | Gv2 | 2014 | — | 18 kW | Gas |
EHYOC.647TBI | Gv6 | 2014 | — | 54 kW | Gas |
EHYOC.678GVC | Gv7 | 2014 | — | 46 kW | Gas |
DHYOC.249TBI | America, LLC 2013 | 2013 | — | 18 kW | Gas |
DHYOC.647TBI | America, LLC 2013 | 2013 | — | 54 kW | Gas |
DHYOC.678GVC | America, LLC 2013 | 2013 | — | 46 kW | Gas |
CHYOC.249FI2 | America, LLC 2012 | 2012 | — | 20 kW | Gas |
CHYOC.647FI3 | America, LLC 2012 | 2012 | — | 54 kW | Gas |
BHYOC.249FI2 | America, LLC 2011 | 2011 | — | 20 kW | Gas |
BHYOC.647FI3 | America, LLC 2011 | 2011 | — | 54 kW | Gas |
BHYOC.678GVC | America, LLC 2011 | 2011 | — | 46 kW | Gas |
AHYOC.249FI2 | America, LLC 2010 | 2010 | — | 20 kW | Gas |
AHYOC.647FI3 | America, LLC 2010 | 2010 | — | 54 kW | Gas |
AHYOC.678GVC | America, LLC 2010 | 2010 | — | 46 kW | Gas |
9HYOC.249AQU | America, LLC 2009 | 2009 | — | 20 kW | Gas |
9HYOC.249MS3 | America, LLC 2009 | 2009 | — | 18 kW | Gas |
9HYOC.647HFI | America, LLC 2009 | 2009 | — | 60 kW | Gas |
9HYOC0.05SD5 | America, LLC 2009 | 2009 | 49 cc | 3 kW | Gas |
9HYOC0.05SF5 | America, LLC 2009 | 2009 | 49 cc | 3 kW | Gas |
8HYOC.249AQU | America, LLC 2008 | 2008 | — | 20 kW | Gas |
8HYOC.249MS3 | America, LLC 2008 | 2008 | — | 18 kW | Gas |
8HYOC.647GTH | America, LLC 2008 | 2008 | — | 57 kW | Gas |
8HYOC0.05SD5 | America, LLC 2008 | 2008 | 49 cc | 3 kW | Gas |
8HYOC0.05SF5 | America, LLC 2008 | 2008 | 49 cc | 3 kW | Gas |
7HYOC.249AQU | America, LLC 2007 | 2007 | — | 20 kW | Gas |
7HYOC.647GTH | America, LLC 2007 | 2007 | — | 57 kW | Gas |
7HYOC0.05SD5 | America, LLC 2007 | 2007 | 49 cc | 3 kW | Gas |
7HYOC0.05SF5 | America, LLC 2007 | 2007 | 49 cc | 3 kW | Gas |
6HYOC.647GTH | America, LLC 2006 | 2006 | — | 57 kW | Gas |
6HYOC0.05SF5 | America, LLC 2006 | 2006 | 49 cc | 3 kW | Gas |
Other motorcycle engines makers
Source
US Environmental Protection Agency engine certification data. Model year and manufacturer are decoded from EPA engine family codes (EPA codes:HYO). An engine family is a group of engines certified together; one family can cover several power ratings.
Engine calculators
Torque, power and BMEPPower from torque and RPM · Torque from power and RPM · Brake mean effective pressure (BMEP)Engine displacementDisplacement from bore, stroke and cylinders · Bore from displacement and stroke · Stroke from displacement and boreBSFC and thermal efficiencyBSFC from power and fuel flow · Fuel flow from power and BSFC · Thermal efficiency from BSFCCompression ratioStatic compression ratio · Chamber volume for a target compression ratio · Theoretical compression pressurePiston speedMean piston speed · Maximum RPM for a piston speed limit · Rod ratio, piston velocity and acceleration
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