1. A combustion system comprising:
a reformer which reforms a fuel on a catalyst so as to increase a combustion energy generated by the fuel per unit quantity of the fuel; and
an injection unit which injects a reformed fuel and a non-reformed fuel in such a manner that the reformed fuel is annularly distributed along an inner circumferential wall of a cylinder of an internal combustion engine and the non-reformed fuel is distributed inside of the annularly distributed reformed fuel, wherein:
the reformed fuel and the non-reformed fuel are combusted in a combustion chamber of the internal combustion engine at a substantially same time, and
the non-reformed fuel is compressed self-ignited to be combusted and the reformed fuel is ignited by a combustion of the non-reformed fuel.
2. A combustion system according to claim 1, wherein:
the reformed fuel is introduced into the combustion chamber through an exhaust outlet or an intake inlet during an intake stroke of the internal combustion engine, the exhaust outlet being opened and closed by an exhaust valve, the intake inlet being opened and closed by an intake valve.
3. A combustion system according to claim 2, wherein:
the reformed fuel is injected into an exhaust passage so that the reformed fuel flows into the combustion chamber through the exhaust outlet.
4. A combustion system according to claim 3, wherein:
the internal combustion engine has a plurality of exhaust outlets with respect to one combustion chamber, and
only one of the exhaust outlets is opened when the reformed fuel flows into the combustion chamber.
5. A combustion system according to claim 2, wherein:
one of the exhaust outlet and the intake inlet through which the reformed fuel flows is referred to as a reformed-fuel inlet port; one of the exhaust outlet and the intake inlet which defines a passage for introducing the reformed fuel to the reformed-fuel inlet port 22a is referred to as an introduction port; and
a portion of the introduction port which is adjacent to the reformed-fuel inlet port is formed to extend in a tangential direction with respect to the inner circumferential wall of the cylinder.
6. A combustion system according to claim 2, wherein:
one of the exhaust outlet and the intake inlet through which the reformed fuel flows is referred to as a reformed-fuel inlet port; and
the reformed-fuel inlet port is opened and closed multiple times during one intake stroke.
7. A combustion system according to claim 2, wherein:
one of the exhaust outlet and the intake inlet through which the reformed fuel flows is referred to as a reformed-fuel inlet port;
one of the exhaust outlet and the intake inlet which defines a passage for introducing the reformed fuel to the intake inlet is referred to as an intake port; and
a portion of the intake port which is adjacent to the intake inlet is formed to extend in such a manner as to be apart from the reformed-fuel inlet port.
8. A combustion system comprising:
a reformer which reforms a fuel on a catalyst; and an injection unit which injects a reformed fuel into an exhaust passage of an internal combustion engine, wherein:
the reformed fuel in the exhaust passage flows into a combustion chamber through an exhaust outlet which is opened and closed by an exhaust valve.
9. A combustion system according to claim 8, wherein:
the fuel which will be flows into the reformer is mixed with an exhaust gas before the fuel is reformed.
10. A combustion system according to claim 8, wherein:
the fuel which will be flows into the reformer performs a heat exchange with the fuel which has been reformed by the reformer.
11. A combustion system according to claim 8, wherein:
the reformer is arranged in an exhaust pipe of the internal combustion engine.
12. A combustion system according to claim 11, wherein:
a heat insulating material is disposed between a cylinder head defining the combustion chamber and the exhaust pipe.
13. A combustion system according to claim 8, further comprising:
a supply valve which opens and closes a passage for introducing the fuel into the reformer, wherein:
the supply valve opens the passage when the internal combustion engine is in an intake stroke.
14. A combustion system according to claim 13, wherein:
the exhaust valve is closed when an exhaust stroke ends;
the exhaust valve is opened when a successive intake stroke starts; and
the supply valve opens the passage to supply the fuel during a period from when the exhaust valve is closed until when the exhaust valve is opened.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A car lighting fixture lens structure comprising: a lens body formed of a transparent resin material and attached to cover an opening of a lamp housing; and a transparent protective film laminated and formed on an outer surface of this lens body,
said lens body being formed of a transparent thermoplastic resin material, and said transparent protective film being formed of a thermoplastic polyurethane.
2. The car lighting fixture lens structure according to claim 1,
wherein said lens body is formed of a polycarbonate, and said transparent protective film is formed of an aliphatic thermoplastic urethane.
3. The car lighting fixture lens structure according to claim 1,
wherein said lens body is formed by disposing a character line comprising a groove portion dug in a thickness direction.
4. The car lighting fixture lens structure according to claim 2,
wherein said lens body is formed by disposing a character line comprising a groove portion dug in a thickness direction.
5. A manufacturing method of the car lighting fixture lens structure according to claim 2,
wherein said polycarbonate to be used has a molecular weight of 20000 or less.
6. A manufacturing method of the car lighting fixture lens structure according to claim 3,
wherein said polycarbonate to be used has a molecular weight of 20000 or less.
7. A manufacturing method of the car lighting fixture lens structure according to claim 4,
wherein said polycarbonate to be used has a molecular weight of 20000 or less.
8. The manufacturing method of the car lighting fixture lens structure according to claim 5, comprising steps of:
forming the lens structure by a film in-mold molding method of injecting a polycarbonate in a metal mold in which an aliphatic thermoplastic urethane film is set.
9. The manufacturing method of the car lighting fixture lens structure according to claim 6, comprising steps of:
forming the lens structure by a film in-mold molding method of injecting a polycarbonate in a metal mold in which an aliphatic thermoplastic urethane film is set.
10. The manufacturing method of the car lighting fixture lens structure according to claim 7, comprising steps of:
forming the lens structure by a film in-mold molding method of injecting a polycarbonate in a metal mold in which an aliphatic thermoplastic urethane film is set.
11. The car lighting fixture lens structure according to claim 1,2 or 3,
wherein, said lens body is formed of a poly carbonate having a molecular weight of 20,000 or less.