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US 8,555,851 B2Granted
Lubrication arrangement for timing chain and cylinder head
AssigneeSwissauto Powersport LLC
InventorsUrs Wenger, Beat Rene Kohler, Hans-Rudolf Jenni
Life of this patent
Estimating the term…
Abstract
A combustion engine is provided that includes at least one oil distribution mechanism for distributing lubrication oil to the engine.
Claims22
A combustion engine, comprising:
- a crankcase defining a journal area and an oil sump;
- a cylinder communicating with the crankcase;
- a cam chain chamber discrete from the crankcase;
- a crankshaft journalled in the journal area of the crankcase, with a first end extending into the cam chain chamber and a second end extending through the crankcase;
- a piston positioned in the cylinder;
- a head above the cylinder having at least one camshaft therein operating valves in the head;
- a first gear positioned on the crankshaft first end and positioned in the cam chain chamber;
- a second gear positioned on an end of the cam;
- a chain entrained around the first and second gear;
- and
- an oil distribution member for distributing oil in the oil sump onto the cam chain for delivering lubrication oil to the head.
8 more elements
A combustion engine, comprising:
- a crankcase defining a journal area and an oil sump;
- a cylinder communicating with the crankcase;
- a cam chain chamber discrete from the crankcase;
- a crankshaft journalled in the journal area of the crankcase, with a first end extending into the cam chain chamber and a second end extending through the crankcase;
- a piston positioned in the cylinder;
- a head above the cylinder having at least one camshaft therein operating valves in the head;
- a first gear positioned on the crankshaft first end and positioned in the cam chain chamber;
- a second gear positioned on an end of the cam;
- a chain entrained around the first and second gear;
- and
- an oil distribution member within the head to deliver oil to the cam lobes.
8 more elements
A combustion engine, comprising:
- a crankcase defining a journal area and an oil sump;
- a cylinder communicating with the crankcase;
- a crankshaft journalled in the journal area of the crankcase, the crankshaft having a first end and a second end;
- a piston positioned in the cylinder;
- a head above the cylinder having a camshaft therein operating at least one valve in the head;
- a first gear positioned on the first end of the crankshaft;
- a second gear positioned on an end of the cam;
- a chain entrained around the first gear and the second gear;
- and
- a tray positioned within the head to collect oil from the chain and to deliver the collected oil to the camshaft, wherein the tray includes a floor portion configured to collect the oil from the chain.
7 more elements
Dependencies are inferred from the claim text.