1 what will the ideal hydrogen ice look like? paul mclachlan pivotal engineering ltd
TRANSCRIPT
1
What Will The Ideal Hydrogen ICE Look Like?
Paul McLachlan
Pivotal Engineering Ltd
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What is an Internal Combustion Engine
?
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4
High power density?
100 Hp100 Hp
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What is an Internal Combustion Engine
?
EngineEngine TorqueTorqueFuelFuel
6
Where do we start ?
First establish the criteria
then design a new engine
that has all the required features
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A very different fuel requires a very different device
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Hydrogen Combustion Characteristics
• Low volumetric power density
• Low ignition energy requirement
• High flame speed at stoichiometric ratios
• High auto ignition temperature
• Short quenching distance
• High diffusivity
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Hydrogen Combustion Characteristics
• Low volumetric power density
• Low ignition energy requirement
• High flame speed at stoichiometric ratios
• High auto ignition temperature
• Short quenching distance
• High diffusivity
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High Flame-front Speed
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Hydrogen Combustion Characteristics
• Low volumetric power density
• Low ignition energy requirement
• High flame speed at stoichiometric ratios
• High auto ignition temperature
• Short quenching distance
• High diffusivity
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Criteria for H2 engine
• Full thermal control• High power density• High thermal efficiency• Low parasitic losses• Crankcase flushing• Longevity• Low Cost• Dual fuel capability
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The Water Cooled Pivotal Piston
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Moving Mass takes Energy
More MassMore Mass
More EnergyMore Energy
More FuelMore Fuel
More EmissionsMore Emissions
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Do we use our car less?
Or do we take less car with us?
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An Automotive Comparison
Toyota V6 Pivotal Opp 4
Capacity (cc /CI)
3000 / 183 2000 /122
Power (hp) 220 220
Weight (lb) 380 160
Box Size (cu.ft) 12 6
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Compact Car with 220 HP Pivotal Engine
1996 1998 2000 2003 2006
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•400 cc•Twin chamber•11000 RPM•100 MPH
The 400cc Motorcycle
1996 1998 2000 2003 2006
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One Litre Twin Chamber Engine
•Water-cooled piston•1000cc•twin chamber•100 hp •6200 rpm
1996 1998 2000 2003 2006
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Pivotal DI Engine
•1000 cc •Twin Chamber •Orbital direct injection
1996 1998 2000 2003 2006
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Pivotal Light Sport Plane Engine
•Power 120 hp.•Weight 120 lb.•TBO 1000 hours.•BSFC ½ lb.per hp/hr
1996 1998 2000 2003 2006
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30 KW Stand Alone Genset
•30 KW•250 Kg
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2 Litre Opposed Four Engine
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The Pivotal engine has the potential to power our vehicles
long into the future
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The water-cooled Pivotal piston is fundamental to the hydrogen
economy.