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US 6,928,973 B2Granted
Internal combustion engine with combustion heater
AssigneeToyota Jidosha Kabushiki Kaisha
InventorMakoto Suzuki
Life of this patent
Estimating the term…
Abstract
The present invention aims at providing a technology capable of increasing a heat quantity of a combustion gas discharged from a combustion heater in an internal combustion engine having the combustion heater. To accomplish this object, the internal combustion engine having the combustion heater comprises a combustion chamber (17d) for combusting a fuel, an engine cooling water circulating between the combustion chamber (17d) and an engine-related element, a heat exchange unit (17a, 17c, 150) for performing a heat exchange between the engine cooling water and a combustion gas produced in the combustion chamber (17d), and heat exchange rate decreasing means (149, 205) for decreasing a heat exchange rate in said heat exchange unit (17a, 17c, 150).
Claims22
An internal combustion engine having a combustion heater, comprising:
- a combustion chamber for combusting a fuel;
- a heating medium circulating between said combustion chamber and an engine-related element,
- a heat exchange unit for performing a heat exchange between said heating medium and a combustion gas produced in said combustion chamber;
- means for decreasing a heat exchange rate in said heat exchange unit, said means including a through hole formed at one side end of a combustion gas passageway and making an interior and an exterior of the combustion gas passageway communicate with each other, and a fan for forcibly causing an inflow of the air into the combustion gas passageway via this through hole from outside said combustion heater.
1 more element
An internal combustion engine having a combustion heater, comprising:
- a combustion chamber for combusting a fuel;
- a heating medium circulating between said combustion chamber and an engine-related element,
- a heat exchange unit for performing a heat exchange between said heating medium and a combustion gas produced in said combustion chamber;
- means for decreasing a heat exchange rate in said heat exchange,
- wherein said heat exchange unit includes a combustion gas passageway for leading the combustion gas to the outside of said combustion heater, and a heating medium passageway through which the heating medium is sent in and out of said combustion heater formed around the combustion gas passageway, and
- said heat exchange rate decreasing means includes a through hole formed at one side end of the combustion gas passageway and making an interior and an exterior of the combustion gas passageway communicate with each other, and a fan for forcibly causing an inflow of the air into the combustion gas passageway via this through hole from outside said combustion heater and a control valve for controlling a quantity of the air flowing through the through hole.
3 more elements
An internal combustion engine having a combustion heater, comprising:
- a combustion chamber for combusting a fuel;
- a heating medium circulating between said combustion chamber and an engine-related element,
- a heat exchange unit for performing a heat exchange between said heating medium and a combustion gas produced in said combustion chamber;
- means for decreasing a heat exchange rate in said heat exchange,
- wherein said combustion gas discharge passageway is a passageway forking into branches and thus extending to the exhaust passageway and to the intake passageway from said combustion heater,
- means for switching over a flow of the combustion gas to the side of the exhaust passageway or to the side of the intake passageway, is provided at the branching point of this combustion gas discharge passageway
- wherein said heat exchange unit includes a combustion gas passageway for leading the combustion gas to the outside of said combustion heater, and a heating medium passageway through which the heating medium is sent in and out of said combustion heater formed around the combustion gas passageway, and
- said heat exchange rate decreasing means includes a through hole formed at one side end of the combustion gas passageway and making an interior and an exterior of the combustion gas passageway communicate with each other, and a fan for forcibly causing an inflow of the air into the combustion gas passageway via this through hole from outside said combustion heater.
5 more elements
A method of operating a combustion heater coupled to internal combustion engine, comprising:
- combusting a fuel in a combustion chamber;
- circulating a heating medium between said combustion chamber and an engine-related element;
- performing a heat exchange between said heating medium and a combustion gas produced in said combustion chamber at a predetermined rate by making an interior and an exterior of a combustion gas passageway communicate with each other, through forcibly causing an inflow of the air into a combustion gas passageway via a through hole from outside said combustion heater with a fan.
An internal combustion engine having a combustion heater, comprising:
- a combustion chamber for combusting a fuel;
- a heating medium circulating between said combustion chamber and an engine-related element,
- a heat exchange unit for performing a heat exchange between said heating medium and a combustion gas produced in said combustion chamber;
- a unit that is heated by the combustion gas after performance of heat exchange in said heat exchange unit;
- means for decreasing a heat exchange rate in said heat exchange unit, said means including a through hole formed at one side end of a combustion gas passageway and making an interior and an exterior of the combustion gas passageway communicate with each other, and a fan for forcibly causing an inflow of the air into the combustion gas passageway via this through hole from outside said combustion heater.
2 more elements
An internal combustion engine having a combustion heater, comprising:
- a combustion chamber for combusting a fuel;
- a heating medium circulating between said combustion chamber and an engine-related element,
- a heat exchange unit for performing a heat exchange between said heating medium and a combustion gas produced in said combustion chamber;
- a unit that is heated by the combustion gas after performance of heat exchange in said heat exchange unit;
- means for decreasing a heat exchange rate in said heat exchange unit,
- wherein said heat exchange unit includes a combustion gas passageway for leading the combustion gas to the outside of said combustion heater, and a heating medium passageway through which the heating medium is sent in and out of said combustion heater formed around the combustion gas passageway, and
- said heat exchange rate decreasing means includes a though hole formed at one side end of the combustion gas passageway and making an interior and an exterior of the combustion gas passageway communicate with each other, and a fan for forcibly causing an inflow of the air into the combustion gas passageway via this through hole from outside said combustion heater, and
- a control valve for controlling a quantity of the air flowing though the though hole.
5 more elements
Dependencies are inferred from the claim text.