Engine with isochoric combustion
View Patent ↗An Engine with Isochoric Combustion has pistons arranged within cylinders, connecting rods connected to the pistons and to upper joints of triangle links, and a crankshaft with crankpins offset from the centerline of the crankshaft by crank arms. The triangle links are connected to the crankpins at additional joints of the triangle links. Radius links are pivotally connected to the engine by pivot pins at one end and to the triangle links at a further joint of the triangle links at their other end. By way of geometry of the linkages defined by the crank arms, the triangle links, the radius links, and the connecting rods, and by way of the relative positions of the crankshaft, the cylinders, and the pivot pins, during a crank angle segment, the Cylinder Volume during the combustion event is characterized by an extended dwell.
1. A vehicle having an Engine with Isochoric Combustion, comprising:
at least one piston arranged within at least one cylinder;
a crankshaft having at least one crankpin offset from the centerline of the crankshaft by at least one crank arm;
a connecting rod connected to the at least one piston and to an upper joint of a triangle link;
the triangle link being connected to the at least one crankpin at a second joint of the triangle link;
a radius link pivotally connected to the engine by a pivot pin at one end and connected to the triangle link at a third joint of the triangle link at its other end.
2. The vehicle of claim 1 , wherein:
by way of geometry of the linkage defined by the at least one crank arm, the triangle link, the radius link, and the connecting rod, and by way of the relative positions of the crankshaft, the at least one cylinder, and the pivot pin, during a crank angle segment, a Cylinder Volume during a combustion event is characterized by an extended dwell.
3. The vehicle of claim 2 , wherein:
during the extended dwell, the at least one piston, the connecting rod, and the triangle link continuing to transfer force to the at least one crankpin of the crankshaft.
4. The vehicle of claim 2 , wherein:
the combustion event being characterized by multiple fuel injection events.
5. The vehicle of claim 2 , wherein:
the at least one crank arm and the radius link being of equal length.
6. The vehicle of claim 2 , wherein:
the triangle link being an isosceles triangle.
7. An Engine with Isochoric Combustion, comprising:
at least one piston arranged within at least one cylinder;
a crankshaft having at least one crankpin offset from the centerline of the crankshaft by at least one crank arm;
a connecting rod connected to the at least one piston and to an upper joint of a triangle link;
the triangle link being connected to the at least one crankpin at a second joint of the triangle link;
a radius link pivotally connected to the engine by a pivot pin at one end and connected to the triangle link at a third joint of the triangle link at its other end.
8. The engine of claim 7 , wherein:
by way of geometry of the linkage defined by the at least one crank arm, the triangle link, the radius link, and the connecting rod, and by way of the relative positions of the crankshaft, the at least one cylinder, and the pivot pin, during a crank angle segment, a Cylinder Volume during a combustion event is characterized by an extended dwell.
9. The engine of claim 8 , wherein:
during the extended dwell, the at least one piston, the connecting rod, and the triangle link continuing to transfer force to the at least one crankpin of the crankshaft.
10. The engine of claim 8 , wherein:
the combustion event being characterized by multiple fuel injection events.
11. The engine of claim 8 , wherein:
the at least one crank arm and the radius link being of equal length.
12. The engine of claim 8 , wherein:
the triangle link being an isosceles triangle.
13. A method of isochoric combustion in an engine, comprising the steps of:
arranging a piston within a cylinder;
providing a crankshaft having at least one crankpin offset from the centerline of the crankshaft;
connecting a connecting rod to the at least one piston and to an upper joint of a triangle link;
connecting the triangle link to the at least one crankpin at a second joint of the triangle link;
pivotally connecting a radius link to the engine by a pivot pin at one end and to the triangle link at a third joint of the triangle link at its other end.
14. The method of claim 13 , wherein:
by way of geometry of the linkage defined by the at least one crank arm, the triangle link, the radius link, and the connecting rod, and by way of the relative positions of the crankshaft, the at least one cylinder, and the pivot pin, during a crank angle segment, a Cylinder Volume during a combustion event is characterized by an extended dwell.
15. The method of claim 14 , wherein:
during the extended dwell, the at least one piston, the connecting rod, and the triangle link continuing to transfer force to the at least one crankpin of the crankshaft.
16. The method of claim 14 , wherein:
the combustion event being characterized by multiple fuel injection events.
17. The method of claim 14 , wherein:
the at least one crank arm and the radius link being of equal length.
18. The method of claim 14 , wherein:
the triangle link being an isosceles triangle.