초록 ▼

A hydrogen enhanced gasoline engine system using high compression ratio is optimized to minimize NOx emissions, exhaust aftertreatment catalyst requirements, hydrogen requirements, engine efficiency and cost. In one mode of operation the engine is operated very lean (equivalence ratio .o slashed.=0.

A hydrogen enhanced gasoline engine system using high compression ratio is optimized to minimize NOx emissions, exhaust aftertreatment catalyst requirements, hydrogen requirements, engine efficiency and cost. In one mode of operation the engine is operated very lean (equivalence ratio .o slashed.=0.4 to 0.7) at lower levels of power. Very lean operation reduces NOx to very low levels. A control system is used to increase equivalence ratio at increased torque or power requirements while avoiding the knock that would be produced by high compression ratio operation. The increased equivalence ratio reduces the amount of hydrogen required to extend the lean limit in order to avoid misfire and increases torque and power. The engine may be naturally aspirated, turbocharged, or supercharged.

대표청구항 ▼

A hydrogen enhanced gasoline engine system using high compression ratio is optimized to minimize NOx emissions, exhaust aftertreatment catalyst requirements, hydrogen requirements, engine efficiency and cost. In one mode of operation the engine is operated very lean (equivalence ratio .o slashed.=0.

A hydrogen enhanced gasoline engine system using high compression ratio is optimized to minimize NOx emissions, exhaust aftertreatment catalyst requirements, hydrogen requirements, engine efficiency and cost. In one mode of operation the engine is operated very lean (equivalence ratio .o slashed.=0.4 to 0.7) at lower levels of power. Very lean operation reduces NOx to very low levels. A control system is used to increase equivalence ratio at increased torque or power requirements while avoiding the knock that would be produced by high compression ratio operation. The increased equivalence ratio reduces the amount of hydrogen required to extend the lean limit in order to avoid misfire and increases torque and power. The engine may be naturally aspirated, turbocharged, or supercharged. aid right, left, and top edges, or a combination thereof, of said end panel, wherein said end panel is attached to said enclosure at a back edge perimeter of said enclosure, said back edge perimeter being formed from the back edges of said right side, left side, and top panels of said animal enclosure; providing a bottom panel having right, left, front, and back edges; and attaching said bottom panel to said animal enclosure along said right, left, and front edges, or a combination thereof, of said bottom panel, wherein said bottom panel is attached to said enclosure at a bottom edge perimeter of said enclosure, said bottom edge perimeter being formed from the bottom edges of said right side, left side, and front panels of said animal enclosure. 15. The method of claim 14, wherein said animal enclosure is a foldable pet shelter.