Toyota Jidosha Kabushiki Kaisha

Haruyuki Katayama

Takanori Nakano

Shinya Hirota

Shunsuke Toshioka

Koichiro Fukuda

Tatsumi Furukubo

An acoustic insulation system for an internal combustion engine mounted on a vehicle according to the present disclosure includes: an acoustic insulation cover configured to cover the internal combustion engine with a gap interposed between the acoustic insulation cover and the internal combustion engine; a first fan configured to introduce air toward the interior of the acoustic insulation cover; and a second fan configured to discharge air from the interior of the acoustic insulation cover.

Acoustic insulation system for internal combustion engine

In an exhaust gas purification apparatus for an internal combustion engine which is provided with a selective reduction type catalyst disposed in an exhaust passage of the internal combustion engine, a reducing agent supply device for supplying an ammonia derived reducing agent to a portion of the exhaust passage at the upstream side of the selective reduction type catalyst, and a mixing device disposed in a portion of the exhaust passage at the upstream side of the selective reduction type catalyst and at the downstream side of the reducing agent supply device, the present invention has a problem to remove solid matter derived from the reducing agent, which is adhered to or deposited on the mixing device, in a suitable manner. In order to solve this problem, the present invention has a temperature raising device disposed in a portion of the exhaust passage upstream of said mixing device so as to blow a flame to said mixing device.

Exhaust gas purification apparatus for internal combustion engine

The purpose of the present invention is to suppress degradation of a PM sensor and a decrease in detection accuracy of the amount of PM in a configuration in which a urea addition unit and a selective reduction-type NOx catalyst (NOx catalyst) are provided downstream of a particulate filter (filter) in an internal combustion engine exhaust passage, the PM sensor being disposed downstream of the filter. According to the present invention, in an exhaust passage () of an internal combustion engine (), a first NOx catalyst () and a second NOx catalyst () are disposed downstream of a filter () successively from the upstream side along the flow of exhaust. A urea addition unit () is disposed between the filter () and the first NOx catalyst (). A PM sensor () is disposed between the first NOx catalyst () and the second NOx catalyst ().

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Susono, Japan

Haruyuki Katayama