US 6,883,488 B2Granted

Rotary combustion engine

OwnerTapio Viitamäkiinventor

Life of this patent

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Abstract

A rotary combustion engine includes a driving eccentric ring arranged between a non-rotary outer casing and a non-rotary inner casing for rotating a power shaft situated inside the inner casing. In order to drive the eccentric ring, a combustion chamber arrangement is provided between the inner and the outer non-rotary casings for burning a mixture of fuel and air supplied thereto, the power shaft being provided with an eccentric element. In order to minimize the number of rotating components, a second eccentric ring is mounted by a bearing around the power shaft inside the aforementioned non-rotary inner casing, this second ring being coaxial with and fixed to the driving eccentric ring, and the eccentric ring arrangement being a substantially non-rotary unit that only performs an eccentric motion, which makes the power shaft rotate.

Claims10

Dependent claims

A rotary combustion engine, comprising:

a non-rotary outer casing,
a non-rotary inner casing,
a power shaft arranged inside the non-rotary inner casing and provided with an eccentric element,
a first eccentric ring between the non-rotary outer casing and the non-rotary inner casing,
a second eccentric ring mounted in bearings around the eccentric element of the power shaft and arranged to operate coaxially with the first eccentric ring,
a combustion chamber arrangement for burning a mixture of fuel and air supplied into the engine,
characterized in that
the first and the second eccentric rings are fixedly connected together by an end ring,
the combustion chamber arrangement for the suction, compression, combustion and exhaust phases of the fuel mixture is located between the first eccentric ring and the non-rotary inner casing, the first eccentric ring driving the power shaft via the second eccentric ring, and that
the eccentric ring arrangement is a substantially non-rotary unit that only performs an eccentric motion, which makes the power shaft rotate.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/466,620Filed 29 Jan 2002
Priority: FI 2001017630 Jan 2001
Published: US 2004/0094101 A120 May 2004
Granted: 26 Apr 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F02B 53/02
Internal-combustion aspects of rotary-piston or oscillating-piston engines: methods of operating
F01C 1/3564
The inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation: the surfaces of…
F01C 1/3566
With vanes reciprocating with respect to the outer member: the inner and outer member being in contact along more than one line or surface
F02B 2075/027
Having less than six strokes per cycle: four