A temperature control throttle device is provided. The temperature control throttle device includes: at least one throttle; a first pipeline and a second pipeline, wherein, the first pipeline and the second pipeline are connected to the same side of the at least one throttle in an air flow direction in parallel, and wherein the second pipeline is provided with a heat exchanger that heats air flowing through the second pipeline with engine coolant, engine oil or engine exhaust gas as a heat source.

A temperature control throttle device is provided. The temperature control throttle device includes: at least one throttle; a first pipeline and a second pipeline, wherein, the first pipeline and the second pipeline are connected to the same side of the at least one throttle in an air flow direction in parallel, and wherein the second pipeline is provided with a heat exchanger that heats air flowing through the second pipeline with engine coolant, engine oil or engine exhaust gas as a heat source.

An internal combustion engine in which a fuel reforming operation in a fuel reformation cylinder is not executed and a warming operation for raising the temperature of the fuel reformation cylinder is executed, when a gas temperature of a fuel reformation chamber at a time point when a piston in the fuel reformation cylinder reaches a compression top dead point is estimated to fall short of a reforming operation allowable lower limit gas temperature. For example, EGR gas is introduced to the fuel reformation chamber without cooling the EGR gas. Further, during a predetermined period from the expansion stroke to an exhaust stroke of an output cylinder, exhaust gas warming fuel is supplied to a combustion chamber. Further, the fuel is combusted in the fuel reformation chamber.

An internal combustion engine in which a fuel reforming operation in a fuel reformation cylinder is not executed and a warming operation for raising the temperature of the fuel reformation cylinder is executed, when a gas temperature of a fuel reformation chamber at a time point when a piston in the fuel reformation cylinder reaches a compression top dead point is estimated to fall short of a reforming operation allowable lower limit gas temperature. For example, EGR gas is introduced to the fuel reformation chamber without cooling the EGR gas. Further, during a predetermined period from the expansion stroke to an exhaust stroke of an output cylinder, exhaust gas warming fuel is supplied to a combustion chamber. Further, the fuel is combusted in the fuel reformation chamber.

In an internal combustion engine, for the operation at part-load, a heat exchanger collects heat from the exhaust gas and re-injects the collected heat into the intake gas being at an intermediate stage (p.sub.3c) of the compression. The exhaust gases are cooled down from point Q.sub.81c to point Q.sub.61c. The intake gases are heated up from point Q.sub.33c to point Q.sub.43c. The average combustion temperature is higher while the exhaust gas temperature is lowered, wherefore the yield is definitely increased.

In an internal combustion engine, for the operation at part-load, a heat exchanger collects heat from the exhaust gas and re-injects the collected heat into the intake gas being at an intermediate stage (p.sub.3c) of the compression. The exhaust gases are cooled down from point Q.sub.81c to point Q.sub.61c. The intake gases are heated up from point Q.sub.33c to point Q.sub.43c. The average combustion temperature is higher while the exhaust gas temperature is lowered, wherefore the yield is definitely increased.

In an internal combustion engine, for the operation at part-load, a heat exchanger collects heat from the exhaust gas and re-injects the collected heat into the intake gas being at an intermediate stage (p.sub.3c) of the compression. The exhaust gases are cooled down from point Q.sub.81c to point Q.sub.61c. The intake gases are heated up from point Q.sub.33c to point Q.sub.43c. The average combustion temperature is higher while the exhaust gas temperature is lowered, wherefore the yield is definitely increased.

In an internal combustion engine, for the operation at part-load, a heat exchanger collects heat from the exhaust gas and re-injects the collected heat into the intake gas being at an intermediate stage (p.sub.3c) of the compression. The exhaust gases are cooled down from point Q.sub.81c to point Q.sub.61c. The intake gases are heated up from point Q.sub.33c to point Q.sub.43c. The average combustion temperature is higher while the exhaust gas temperature is lowered, wherefore the yield is definitely increased.

A temperature control throttle device is provided. The temperature control throttle device includes: at least one throttle; a first pipeline and a second pipeline, wherein, the first pipeline and the second pipeline are connected to the same side of the at least one throttle in an air flow direction in parallel, and wherein the second pipeline is provided with a heat exchanger that heats air flowing through the second pipeline with engine coolant, engine oil or engine exhaust gas as a heat source.

A temperature control throttle device is provided. The temperature control throttle device includes: at least one throttle; a first pipeline and a second pipeline, wherein, the first pipeline and the second pipeline are connected to the same side of the at least one throttle in an air flow direction in parallel, and wherein the second pipeline is provided with a heat exchanger that heats air flowing through the second pipeline with engine coolant, engine oil or engine exhaust gas as a heat source.