A working medium supply control system in a heat exchanger is provided. The heat exchanger (14) carries out heat exchange between an exhaust gas flowing through an exhaust passage of an internal combustion engine (11) and water flowing through a heat trans...

A device for recovering waste heat from internal combustion engines, which is constructed as follows. Operation of an internal combustion engine (1) produces first and second temperature-rise sections (202, 204). The degree of temperature rise is greater i...

A combustion gas purifier, wherein a small capacity pre-catalytic device (34) is disposed just on the downstream side of an exhaust port (18) and a large capacity main catalytic device (35) is disposed just on the downstream side of the pre-catalytic devic...

In a drive system, there is provided a waste heat recovering device forming a Rankine cycle by an evaporator for heating water with waste heat of an internal combustion engine to generate high-pressure vapor, the internal combustion engine being connected ...