Hino Motors, Ltd.

Toyota Jidosha Kabushiki Kaisha

Isuzu Motors Limited

Avl List Gmbh

Tokyo Roki Co., Ltd.

Minoru Kowada

Hisaki Torisaka

Thomas Obenaus

Jun Namima

Harald Grantner

Heimo Schreier

Ryoji Suzuki

Hideki Endo

Koji Maruyama

Shin Mizoroki

Koichiro Taniguchi

Toshiyuki Yamada

Tsutomu Shimizu

Hiroshi Uchigata

Toshiaki Kuroki

Tetsuichi Kominami

Yu Yaguchi

An operating mode control device includes a travel driving force information acquisition unit configured to acquire a time-series travel driving force when traveling on a travel route; a vehicle speed information acquisition unit configured to acquire a time-series vehicle speed when traveling on the travel route; a motor operation estimation unit configured to estimate a time-series torque and rotation speed of the motor on the basis of a time-series travel driving force and vehicle speed; an efficiency calculation unit configured to acquire a time-series efficiency value of each operating mode on the basis of the time-series torque and rotation speed and calculate a total efficiency value; an operating mode determination unit configured to determine the operating mode having the highest total efficiency value as a default operating mode; and an operation control unit configured to control an operation by the default operating mode.

Control device for determining an operating mode defining a number of motors operating in an electric vehicle

A battery management device includes: a first switch state acquisition unit configured to acquire the state of an ignition switch; a determination unit configured to determine to perform correction control for correcting an error in the state of charge (SOC) of the battery when the ignition switch is operated from ON to OFF; a correction control unit configured to perform the correction control of the SOC of the battery when it is determined that the correction control is to be performed; and a second switch state acquisition unit configured to acquire the state of a cancel switch for canceling the execution of the correction control. When the ignition switch is operated from ON to OFF while the cancel switch is ON, the determination unit determines that the correction control is not to be performed.

Battery management device

Arranged are a selective reduction catalyst for reacting NOin exhaust gaswith ammonia, an exhaust passagefor guiding the exhaust gasto the selective reduction catalyst, and a urea water addition unitincorporated in the exhaust passagefor adding urea waterinto the exhaust gas. A portion of the exhaust passageadjacent to an added position of the urea wateris constituted by a divisional piecemade of material having higher corrosive resistance to a substance produced by addition of the urea waterthan that of a material constituting the remaining portion of the exhaust passageother than the adjacent portion.

Exhaust emission control device

In a mixing structure with an injectorarrangedimmediately after a bendof an exhaust pipe, urea waterbeing injected by the injectorinto the exhaust pipefor mixing, a pipe diameter Ddownstream of the bendof the exhaust pipeis large relative to a pipe diameter Dupstream of the bend.

Mixing structure

In a cooling water circulation device for use in a NOreduction system where a urea injectoris positioned higher than an engine, a three-way branching deviceis arranged at a highest position in a passage of passing cooling waterfrom the engineto the urea injectorand returning the same to the engineto add an upward air vent. The air ventis connected through an air-venting connecting pipeto a header tank(water pouring tank) for the cooling waterarranged higher than the urea injector

Cooling water circulation device

An exhaust emission control device comprises a selective reduction catalyst for reacting NOin an exhaust gas with ammonia, means for adding a urea water into the exhaust gas upstream of the catalyst and a cylindrical mixing pipe as a connection between the adding means and the catalyst, an entry end of the mixing pipe being formed with circumferential opening sections and provided with guide fins for guiding the exhaust gas to the opening sections tangentially of the entry end to provide a mixer structure, the adding means being arranged centrally on the entry end of the mixing pipe and directed toward an exit end of the mixing pipe for addition of the urea water into a swirling flow of the exhaust gas caused by the mixer structure. The opening sections are formed along the swirling flow.

The present invention has its object to suppress heat transfer from an adapterto an injectorso as to ensure a high level of reliability of the injectorover a long time. In a mounting structure for an injectorfitted at a mixing pipeB (exhaust passage) via an adapterfor addition of urea water into exhaust gas, an inner surface of the adapterto be exposed to the flow of the exhaust gasis shielded by a heat-resisting plateto interpose a heat insulating layerbetween the plateand the inner surface.

Injector mounting structure

An object of the invention is to provide an exhaust emission control device capable of favorably dispersing urea water for improved mixing with exhaust gas even if a flow rate of the exhaust gas is increased. An entry end of a mixing pipe is formed with a first opening at a position near an exit side of a particulate filter and is formed with a second opening at a position away from the exit side of the particulate filter and diametrically opposite to the first opening. Arranged in a downstream end of a gas gathering chamber are a first partition which guides all of the flow of exhaust gas from the particulate filter into a one-way swirling flow around the entry end of the mixing pipe, a second partition which divides the flow of the exhaust gas guided by the first partition into two to cause an inner one of the divided swirling flows to tangentially enter into the first opening and a third partition which causes the remaining outer swirling flow to tangentially enter into the second opening.

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

An exhaust emission control device, which can absorb thermal expansion difference between a particulate filter and a selective reduction catalyst without causing urea deposition, has the filter and the catalyst arranged in parallel with each other with their entry ends facing the same direction. An S-shaped communication passage is provided to introduce the exhaust gas from a discharge end of the filter into an entry end of the catalyst through turndown, urea water being added upstream of the communication passage. A mixing pipe providing a straight section of the communication passage at an intermediate portion thereof, with a double-pipe portion constituted by overlapped stretchable/retractable inner and outer pipes, the outer pipe having a terminal end secured to an outer periphery of the inner pipe and being provided with an axially expansible and contractible bellows, a sealing ring fitted over an outer periphery of a terminal end of the inner pipe.

An exhaust emission control device has a particulate filterand a selective reduction catalystarranged side by side. An S-shaped communication passageis arranged for introduction of exhaust gasfrom a rear end of the filterto a front end of the adjacent catalystin a forward fold-back manner and with a urea water addition injectorarranged midway of the passage. In order to satisfactorily disperse the urea water with enhanced mixing with the exhaust gaseven if the flow rate is increased, slitsare formed in circumferentially spaced positions on a rear end of a mixing pipeB constituting an upstream portion of the communication passageso as to introduce the exhaust gas. A downstream endof a gas gathering chamberA is connected to the rear end of the mixing pipeB such that the slitsare encased and the rear end of the mixing pipeB is closed.

Provided is an exhaust emission control device in which only a casing for a particulate filter can be easily taken out of position with a casing for a selective reduction catalyst being left on a vehicle body in a reliably supported state. The exhaust emission control device has a particulate filterand a selective reduction catalysthoused in casingsandrespectively, and arranged side by side with entry ends of them are directed in one and the same direction, and an S-shaped communication passagewhich interconnects the casingsandand is intermediately provided with urea water addition means. The communication passageis intermediately provided with a separable portion for suitable separate-off, and the casingfor the selective reduction catalystis supported by a frameon a vehicle body independently of the casingfor the particulate filter. The casingfor the particulate filteris detachably mounted and supported on the vehicle body and on the casingfor the selective reduction catalyst

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 including a casing, and a downstream exhaust passage, which extends substantially perpendicular to an axis of the casing and receives an exhaust gas flow from an outlet of the casing, is disclosed. The casing accommodates a particulate filter as a post-treatment device through which exhaust gas is passed for cleanup. In order to realize compactness in size of the whole structure without increasing exhaust resistance, an outer chamber encases the casing in a required range to provide required spacing for an open end and an outer periphery of the outlet of the casing. The outlet chamber intervenes between the outlet of the casing and the downstream exhaust passage.

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.

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Hino, Japan

Minoru Kowada