Yanmar Co., Ltd.

Yanmar Holdings Co., Ltd.

Masato Kitazaki

Shusuke Okada

Osamu Sakamoto

Hiroshi Uehara

Akihiro Nishimura

Jiro Fukudome

Michihiko Hara

Nobu Kobayashi

Osamu Kawatate

Toru Yoshizuka

Taeko Tahara

Kazuyuki Koda

A Stirling engine includes: the thermosiphon that accommodates the heating medium receiving heat from a heat source; and an engine unit that has a body accommodating working gas. A heater that gives heat to the working gas by the heating medium is arranged in the body. The Stirling engine includes an engine controller that executes control for increasing an absorbed amount of thermal energy from the heating medium when at least one of the pressure and the temperature of the heating medium exceeds a predetermined value.

Stirling engine

A Stirling engine includes an engine main body including at least an engine unit and a cooler heat exchanger, and a heater structure including at least a heater heat exchanger. The engine main body and the heater structure have separate structures, and the engine main body and the heater structure are connected via a coupling pipe portion.

An exhaust gas purification device having a DPF provided in an exhaust system of an internal combustion engine. The device has one or more sound pressure measurement means for measuring exhaust sound pressure and calculation means for calculating the amount of PM accumulation based on the exhaust sound pressure measured. On the upstream side of the DPF are arranged exhaust gas temperature measurement means and exhaust gas temperature raising means. The exhaust gas temperature raising means is activated when the amount of PM accumulation calculated by the calculation means is higher than a preset default and at the same time when the exhaust gas temperature measured by the exhaust temperature measurement means is lower than a lower limit of a temperature region in which the DPF can be regenerated.

Exhaust gas purification device

In an embodiment of an exhaust gas purification apparatus, when an accumulation amount of particulate matter in a DPF () exceeds a predetermined amount and an exhaust gas temperature of an engine is lower than a restoration operable temperature, an intake air amount reducing operation is executed by an air intake throttling device () provided for an air intake pipe () of the engine, and a heating operation is executed by an electric heater () provided upstream from the DPF (), thereby increasing the exhaust gas temperature to the restoration operable temperature to start a restoration operation of the DPF ().

Exhaust gas purification apparatus, internal combustion engine comprising the same, and particulate filter restoring method

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Osaka, Japan

Masato Kitazaki