Hino Motors, Ltd.

Avl List Gmbh

Toyota Jidosha Kabushiki Kaisha

Diesel Engine Retarders, Inc.

Hino Jidosha Kogyo Kabushiki Kaisha

Hitachi Metals, Ltd.

Hisaki Torisaka

Hirohisa Suwabe

Minoru Kowada

Thomas Obenaus

Harald Grantner

Zdenek S Meistrick

Shinya Tokumaru

Yasuhiko Otsubo

Hiroshi Funabashi

Makoto Tsujita

Heimo Schreier

Yoshihide Maeda

Toshikatsu Muramatsu

Hideyuki Kakizawa

Ryutaro Shimogama

Koji Shoyama

Disclosed is a method for preventing fuel freezing in a postprocessing burner system with a burnerupstream of a particulate filter(exhaust purification member) incorporated in an exhaust pipe. Fuel is fed from a fuel tankserved also for a diesel engine(engine) to the burnerthrough a feed pipe, and excess fuel is returned to the fuel tankthrough a return pipe. The fuel is periodically circulated between the burnerand the fuel tankthrough the feed and return pipesandunder a condition of ambient air temperature during vehicle travel being at or below a predetermined temperature.

Method and device for preventing fuel freezing in a postprocessing burner system

An exhaust emission control device is provided which is compact in size and has favorable dispersibility of exhaust gas from a muffling structureto an oxidation catalyst. The muffling structurearranged upstream of the oxidation catalyst in a direction D of gas flow has a dispersion platefor dividing the interior of the casinginto dispersion chambersandupstream and downstream in the direction D of gas flow, respectively, and an inner pipeinserted from outside of and into the chamberand with a tip end fixed to the dispersion plateand circumferentially formed with poresandhaving diameters gradually reduced in the order in the direction D of gas flow from upstream to downstream. The dispersion platefacing the dispersion chambersandis formed with a plurality of radially-outward-larger-diametered and radially-inward-smaller-diametered poresand

Exhaust emission control device

An exhaust system including an exhaust emission control device with a post treatment unit (e.g., a selective reduction catalyst) for depuration of exhaust gas flowing therethrough is disclosed. The exhaust system includes a layout that introduces the exhaust gas into the post-treatment unit through a turnabout. An introductory part encircles an inlet end of the post-treatment unit and receives the exhaust gas through an exhaust inlet port from a direction substantially perpendicular to an axis of the selective reduction catalyst. The introduction part is formed with a first depression cambered away from the inlet end of the selective reduction catalyst and approaching toward the inlet end of the selective reduction catalyst as the first depression extends away from the exhaust inlet port and toward an introduction direction of the exhaust gas, thereby promoting uniformity of the exhaust gas flow entering the post-treatment unit.

An exhaust emission control device is disclosed. The exhaust emission control device includes a particulate filter incorporated in an exhaust pipe to capture particulates in exhaust gas, a selective reduction catalyst arranged downstream of the particulate filter to selectively react NOwith ammonia, even in the presence of oxygen, and urea water addition means capable of adding urea water as reducing agent between the catalyst and the filter. The urea water addition means is arranged at an upstream end of a longest linear portion. At least one bend is formed in a passage which guides the exhaust gas from the urea water addition means to the selective reduction catalyst.

A method for forced regeneration of a catalytic regenerative particulate filter is disclosed. An oxidation catalyst is arranged in front of the particulate filter incorporated in the exhaust pipe. When the exhaust temperature measured between the oxidation catalyst and the filter is lower than a first preset temperature and is equal or more than a second preset temperature lower than the first preset temperature, post injection is added at non-ignition timing following the main injection of the fuel near the compression upper dead center to conduct fuel addition. When the exhaust temperature exceeds the first preset temperature, the post injection is stopped and fuel is directly injected into the exhaust pipe upstream of the oxidation catalyst to conduct the fuel addition. Thus, the particulate filter can be regenerated more efficiently and in shorter time.

Method for regenerating particulate filter

The present invention is a valve opening mechanism which has been designed so as to be able to open an actuator pin ( ), on which a stop ( ) is provided that is through-mounted to slide freely facing in a vertical direction in relation to the top of a rocker arm ( ) and which is restrained by the bottom of the rocker arm ( ) tip at a specified uppermost position, and the engine valves ( ), by pushing downward during the exhaust stroke of a rocker arm ( ).

Valve opening mechanism

A retaining plate is disposed along and spaced apart by a predetermined distance from the surface of a noise source in an automotive vehicle component so as not to be displaced away from the surface of the noise source. A sheet-like elastic member is compressedly interposed between the noise source and the retaining plate. As a result, the effect of reducing the noise due to vibration is attained without substantially increasing the weight of the automotive vehicle components and without adversely affecting the sealability and other performances required to the components.

Growing community of inventors

Hino, Japan

Hisaki Torisaka