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US 5,209,200 AGranted
Controlled dispersion of injected fuel
AssigneeOrbital Engine Company (Australia) Pty. Limited
InventorsSteven R. Ahern, Jorge M. P. da Silva
Life of this patent
Estimating the term…
Abstract
An internal combustion engine having a cylinder head at one end of the cylinder, a piston mounted for reciprocation in the cylinder, a cavity in the cylinder head, and a fuel injector nozzle located in the cavity in the cylinder head to deliver fuel into the cavity in a direction towards the piston. The piston has a bowl in the top thereof, positioned to intersect the path of delivery of the fuel from the injector nozzle. A rim extends around the periphery of the bowl and is upstanding from the to surface of the piston. The bowl and rim effect containment of the fuel, particularly during high fueling rates, to control the combustion process.
Claims19
An internal combustion engine, comprising:
- a cylinder;
- a cylinder head at one end of the cylinder;
- a piston mounted for reciprocation in the cylinder;
- a cavity in the cylinder head;
- a fuel injector nozzle located in the cavity in the cylinder head to deliver fuel in a direction towards the piston, the piston having a top face directed toward the cylinder head;
- a bowl in the top face of the piston positioned so that throughout at least a final half of the compression stroke of the piston, the bowl is located in a path of delivery of the fuel from the nozzle so that fuel will be delivered into the bowl, and a rim extends about the periphery of the bowl upstanding from the top surface of the piston, wherein an external peripheral surface of the rim is inclined upwardly and inwardly at an angle of about 45.degree. to the axis of the bowl.
3 more elements
An internal combustion engine, comprising:
- a cylinder;
- a cylinder head at one end of the cylinder;
- a piston mounted for reciprocation in the cylinder;
- a cavity in the cylinder head;
- a fuel injector nozzle located in the cavity in the cylinder head to deliver fuel in a direction towards the piston, the piston having a top face directed toward the cylinder head;
- a bowl in the top face of the piston positioned so that throughout at least a final half of the compression stroke of the piston, the bowl is located in a path of delivery of the fuel from the nozzle so that fuel will be delivered into the bowl, and a rim extends about the periphery of the bowl upstanding from the top surface of the piston, wherein an external peripheral surface of the rim is inclined upwardly and inwardly at an angle of 30.degree. to 50.degree. to the axis of the bowl.
3 more elements
An internal combustion engine, comprising:
- a cylinder;
- a cylinder head at one end of the cylinder;
- a piston mounted for reciprocation in the cylinder;
- a cavity in the cylinder head;
- a fuel injector nozzle located in the cavity in the cylinder head to deliver fuel in a direction towards the piston, the piston having a top face directed toward the cylinder head;
- a bowl in the top face of the piston positioned so that throughout at least a final half of the compression stroke of the piston, the bowl is located in a path of delivery of the fuel from the nozzle so that fuel will be delivered into the bowl, and a rim extends about the periphery of the bowl upstanding from the top surface of the piston, wherein the bowl and rim have a total depth of about 5 to 8 mm.
3 more elements
An internal combustion engine, comprising:
- a cylinder;
- a cylinder head at one end of the cylinder;
- a piston mounted for reciprocation in the cylinder;
- a cavity in the cylinder head;
- a fuel injector nozzle located in the cavity in the cylinder head to deliver fuel in a direction towards the piston, the piston having a top face directed toward the cylinder head;
- a bowl in the top face of the piston positioned so that throughout at least a final half of the compression stroke of the piston, the bowl is located in a path of delivery of the fuel from the nozzle so that fuel will be delivered into the bowl, and a rim extends about the periphery of the bowl upstanding from the top surface of the piston, wherein the depth of the bowl in the piston is about half the total depth of the bowl and rim.
3 more elements
An internal combustion engine comprising:
- a cylinder;
- a cylinder head at one end of the cylinder;
- a piston mounted for reciprocation in the cylinder;
- a cavity in the cylinder head;
- spark means mounted in the cylinder for providing an ignition spark in the cavity;
- a fuel injector nozzle located in the cavity in the cylinder head to deliver fuel in a direction towards the piston, the piston having a top face directed toward the cylinder head;
- a bowl in the top face of the piston positioned so that throughout at least a final half of the compression stroke of the piston, the bowl is located in a path of delivery of the fuel from the nozzle so that fuel will be delivered into the bowl, an internal surface of said bowl having a flat bottom configuration which directs the fuel along a path substantially reverse to a direction of the incoming fuel, wherein a rim upstanding from the top face of the piston and shaped to create an air flow in said reverse direction of the fuel flow extends about a periphery of the bowl to substantially surround and thereby contain said reverse fuel flow during said final half of the compression stroke.
4 more elements
Dependencies are inferred from the claim text.