Rotary piston internal combustion engines
AssigneeCompound Rotary Engines Limited
InventorShaun ADDY
Life of this patent
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Abstract
A rotary piston internal combustion engine includes an engine housing, an output shaft configured to rotate relative to the engine housing about an axis for transmitting power to parts to be operated, a rotary piston mounted eccentrically on the output shaft, a first bearing configured to support and facilitate rotation of the output shaft, the first bearing being sandwiched between a first pair of seals and a second bearing configured to support and facilitate rotation of the rotary piston, the second bearing being sandwiched between a second pair of seals, wherein the output shaft defines an internal path which has a first section to allow a lubricating substance to flow between the first bearing and the second bearing, in use.
Claims25
A rotary piston internal combustion engine including:
- an engine housing;
- an output shaft configured to rotate relative to the engine housing about
- an axis for transmitting power to parts to be operated;
- a rotary piston mounted eccentrically on the output shaft;
- a first bearing configured to support and facilitate rotation of the output shaft, the first bearing being sandwiched between a first pair of seals;
- and
- a second bearing configured to support and facilitate rotation of the rotary piston, the second bearing being sandwiched between a second pair of seals;
- wherein the output shaft defines an internal path comprising a first section to allow a lubricating substance to flow between the first bearing and the second bearing, in use.
A rotary piston internal combustion engine according to any preceding claim, wherein the first bearing and/or the third bearing, where present, includes:
- a ring;
- a retainer located within the ring and mounted coaxially relative thereto;
- and
- a rolling element,
- wherein the rolling element is held relative to the ring by the retainer.
A rotary piston internal combustion engine according to any preceding claim, wherein the first and/or the second pair of seals includes one or more seals configured to withstand fluid pressures of 300 kPa and above.
A rotary piston internal combustion engine according to any preceding claim, wherein the second bearing comprises a ring fixed relative to an inner periphery of the rotary piston.
A rotary piston internal combustion engine according to any preceding claim further comprising a lubricating substance reservoir and a pump, wherein the pump is configured to pump the lubricating substance from the lubricating substance reservoir to the first bearing.
A vehicle or a device comprising a rotary piston internal combustion engine according to any preceding claim.
Dependencies are inferred from the claim text.