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US 10,989,107 B2Granted
Internal combustion engine
AssigneeYanmar Power Technology Co., Ltd.
InventorGo Asai
Life of this patent
Estimating the term…
Abstract
An internal combustion engine including a fuel reformation cylinder for reforming a fuel and an output cylinder for yielding an engine power by combusting a fuel or a reformed fuel, wherein at least a part of the surfaces constituting a volume-variable reaction chamber of the fuel reformation cylinder has a highly heat-insulative material.
Claims20
An internal combustion engine including a fuel reformation cylinder for reforming a fuel and an output cylinder for yielding an engine power by combusting a fuel or a reformed fuel, wherein:
- at least a part of a surface constituting a volume-variable reaction chamber of the fuel reformation cylinder includes a ring shaped protrusion protruding radially inward from an inner surface of the fuel reformation cylinder, the ring shaped protrusion made of a highly heat-insulative material;
- an inner circumferential surface of the fuel reformation cylinder includes a first portion and a second portion, the first portion defining a first cylinder diameter and the second portion defining a second cylinder diameter, and the second cylinder diameter is less than the first cylinder diameter;
- the ring shaped protrusion is disposed at the first portion, and a diameter defined by the ring shaped protrusion is less than the second cylinder diameter;
- and
- a first surface of a piston defines a first diameter and a second surface of the piston defines a second diameter, the first diameter is less than each of the second diameter and the diameter defined by the ring shaped protrusion, and the second diameter is greater than the diameter defined by the ring shaped protrusion.
2 more elements
An apparatus comprising:
- a fuel reformation cylinder configured to receive a first fuel and output a reformed fuel, the fuel reformation cylinder including a first inner circumferential surface and a second inner circumferential surface, and a diameter defined by the second inner circumferential surface is less than a diameter defined by the first inner circumferential surface;
- a ring shaped protrusion configured to extend radially inward from the first inner circumferential surface, a highly heat-insulative material disposed on the ring shaped protrusion, and a diameter defined by the ring shaped protrusion is less than a diameter defined by the second inner circumferential surface;
- an output cylinder configured to combust the reformed fuel;
- and
- a piston including a first piston surface defining a first piston diameter and a second piston surface defining a second piston diameter, the first piston diameter is less than each of the second piston diameter and the diameter defined by the ring shaped protrusion, and the second piston diameter is greater than the diameter defined by the ring shaped protrusion.
2 more elements
An apparatus comprising:
- a fuel reformation cylinder including a first inner circumferential surface and a second inner circumferential surface, a diameter defined by the second inner circumferential surface is less than a diameter defined by the first inner circumferential surface;
- a ring shaped protrusion configured to extend radially inward from the first inner circumferential surface, a highly heat-insulative material disposed on the ring shaped protrusion, and a diameter defined by the ring shaped protrusion is less than a diameter defined by the second inner circumferential surface;
- and
- a piston including a first piston surface defining a first piston diameter and a second piston surface defining a second piston diameter, the first piston diameter is less than each of the second piston diameter and the diameter defined by the ring shaped protrusion, and the second piston diameter is greater than the diameter defined by the ring shaped protrusion.
1 more element
Dependencies are inferred from the claim text.