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What Will The Ideal Hydrogen ICE Look Like?. Paul McLachlan Pivotal Engineering Ltd. What is an Internal Combustion Engine. ?. High power density?. 100 Hp. 100 Hp. What is an Internal Combustion Engine ?. Engine. Fuel. Torque. Where do we start ?. First establish the criteria
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What Will The Ideal Hydrogen ICE Look Like? Paul McLachlan Pivotal Engineering Ltd
High power density? 100 Hp 100 Hp
What is an Internal Combustion Engine? Engine Fuel Torque
Where do we start ? First establish the criteria then design a new engine that has all the required features
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
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
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
Criteria for H2 engine • Full thermal control • High power density • High thermal efficiency • Low parasitic losses • Crankcase flushing • Longevity • Low Cost • Dual fuel capability
Moving Mass takes Energy More Mass More Energy More Fuel More Emissions
Do we use our car less? Or do we take less car with us?
The 400cc Motorcycle • 400 cc • Twin chamber • 11000 RPM • 100 MPH
One Litre Twin Chamber Engine • Water-cooled piston • 1000cc • twin chamber • 100 hp • 6200 rpm
Pivotal DI Engine • 1000 cc • Twin Chamber • Orbital direct injection
Pivotal Light Sport Plane Engine • Power 120 hp. • Weight 120 lb. • TBO 1000 hours. • BSFC ½ lb.per hp/hr
30 KWStand AloneGenset • 30 KW • 250 Kg
The Pivotal engine has the potential to power our vehicles long into the future
The water-cooled Pivotal piston is fundamental to the hydrogen economy.