Abstract: A vehicle, such as a motorcycle, can include an engine and a head pipe provided ahead of the engine. Electrical equipment provided behind the head pipe and ahead of the engine can be partly exposed by a gap between a down frame and a radiator of the vehicle, enabling the electrical equipment to be cooled by airflow.

Abstract: A bulldozer is equipped with a cab, a cooling device, an engine cover, an engine, and an exhaust emission control device. The cooling device is situated behind the cab. The engine cover is situated in front of the cab. The engine is situated inside the engine cover. The engine includes a crank shaft that extends in the longitudinal direction of the bulldozer. The exhaust emission control device includes a main body pipe part and a connecting pipe part connecting to the main body pipe part. The exhaust emission control device cleans the exhaust from the engine inside the main body pipe part. The main body pipe part is situated in the front of the engine. At least a portion of the main body pipe part is situated to overlap with the engine in the front view of the bulldozer.

Abstract: An exhaust device of a vehicle, provided with a V-engine (5) having a front cylinder (52) and a rear cylinder (53), has a muffler (93) arranged in a rear part of the vehicle. A front cylinder exhaust pipe (91) is connected to a front surface of the front cylinder (52), and a rear cylinder exhaust pipe (92) is connected to a rear surface of the rear cylinder (53). A collecting pipe (94) is provided to collect the front cylinder exhaust pipe and the rear cylinder exhaust pipe. Also, a downstream exhaust pipe (95) extends from the collecting pipe to the muffler. The total length of the front cylinder exhaust pipe and the total length of the rear cylinder exhaust pipe are substantially the same.

Abstract: A work vehicle includes a cooling fan, an engine, and a diesel particulate filter (DPF) purifying exhaust gas of the engine, placed under a hood in that order, beginning at the front. Exhaust gas from the engine is exhausted through an exhaust passage after passing through the DPF. The cooling fan supplies cooling air to the rear. The DPF is placed such that a length direction thereof follows a width direction of a vehicle body. The exhaust passage includes a first passage, a second passage, and a third passage. The first passage extends forward and upward from the DPF before extending along the length direction thereof on a front side of the DPF. The second passage extends downward from a downstream portion of the first passage. The third passage extends to the rear from a downstream portion of the second passage and also includes an exhaust outlet.

Abstract: Engine exhaust is sent to a reformer, which produces hydrogen from fuel remaining in the exhaust. The hydrogen may be stored in a hydrogen tank, and may be used by a fuel cell to produce electricity to recharge a vehicle battery and/or to supply propulsion current to an electric propulsion system.

Abstract: A utility vehicle includes an engine accommodated in an engine room below a seat; an engine room side wall defining the engine room and covering the engine from rightward or from leftward; and a cooling fan disposed at one of right and left sides of the engine or and configured to supply cooling air to an interior of the engine room via the engine room side wall.

Abstract: A work vehicle includes a vehicle frame extending between a right and left pair of rear wheels. An engine is mounted in a vertical position on a horizontal mounting surface defined in the vehicle frame in a peripheral area of the rear wheels in a central portion of a transverse direction of the vehicle. A fuel tank includes a main tank body mounted under a driver's seat and an auxiliary tank body mounted on the mounting surface on one lateral side of the engine in the transverse direction of the vehicle. A canister is mounted adjacent to the engine on one lateral side of the engine and rearwardly of and adjacent to the auxiliary fuel tank.

Abstract: A cooling unit that is cooled by heat exchange with air is disposed at a rear side in a vehicle longitudinal direction of a power unit. Further, a cooling fan is disposed at a rear in the vehicle longitudinal direction of the cooling unit. Further, catalytic converters are disposed at a rear side in the vehicle longitudinal direction of the power unit. A periphery of these catalytic converters is surrounded by a heat insulator. A duct portion, that communicates an interior of the heat insulator and a space between the cooling unit and the cooling fan is provided at this heat insulator.

Abstract: To obtain a vehicle underbody structure that is capable of ensuring the capacity of a fuel tank while suppressing an increase in the size of the fuel tank. A fuel tank is mounted behind a front floor and under a center floor. An exhaust pipe partially overlaps the fuel tank when a vehicle is seen in a plan view, and the exhaust pipe is positioned between the fuel tank and the center floor at this overlapping section.

Abstract: A motorcycle is provided with vehicle frame, an internal combustion engine operatively attached to the vehicle frame, and an exhaust system for routing exhaust gas from the engine therethrough. The motorcycle also includes a body cover that covers at least a lateral side portion of the engine and constitutes an outer face of the vehicle, and a heat shield having a face closely adjacent and visually continuous to the body cover, the heat shield covering a lateral side portion of the exhaust system. The heat shield and the body cover cooperate to configure the external face of the vehicle, and the heat shield is mounted to the exhaust system. The body cover is formed of a plastic material, and the heat shield is made of metal. The body cover and heat shield cooperate to provide an improved vehicle appearance.

Abstract: A method for controlling aftertreatment regeneration for a system having a hybrid powertrain is described. The method includes determining that an engine aftertreatment regeneration is indicated when a regeneration request index exceeds a first threshold. The method includes determining an acceptable battery usage amount based on a current battery state of charge (SOC) and a minimum battery SOC. The method further includes determining a battery usage amount for an engine aftertreatment regeneration operation. The method includes initiating an engine aftertreatment regeneration when the battery usage amount is less than or equal to the acceptable battery usage amount.

Abstract: An improvement in a work vehicle having an exhaust gas treatment unit is disclosed. An engine is disposed in an engine room formed in a vehicle body and supported by the vehicle body. A support unit includes right and left vertical struts mounted on the vehicle body across the engine along a vehicle body transverse direction. The exhaust gas treatment unit is disposed inside the engine room and attached to the support unit upwardly of the engine, under a posture elongate along the vehicle body transverse direction.

Abstract: A construction machine including: a frame; an engine on a frame; a hydraulic pump; a guard panel disposed on the frame to surround an engine room and including a maintenance port for the hydraulic pump; an exhaust-gas-purification device inside the engine room; and a support member to support an exhaust-gas-aftertreatment device including the exhaust-gas-purification device just above the hydraulic pump. The support member includes a first portion to support the exhaust-gas-purification device and a second portion to support a NOx-reducing catalyst at a position closer to the maintenance port than the exhaust-gas-purification device. The catalyst supporting portion supports the NOx-reducing catalyst at a position higher than the exhaust-gas-purification device so as to form, over the hydraulic pump, a maintenance space having an upper end higher than an upper end of a space formed under the first portion and the exhaust-gas-purification device.

Abstract: A snowmobile has an engine mounted with an exhaust port facing forwardly. A steering post extends substantially along a longitudinal centerline of the vehicle and over a top of the engine. An exhaust outlet is coupled to exhaust port and projects vertically upwardly to a position higher than the engine, and projecting rearwardly between the steering post and frame members. The rider position is re-defined relative to the snowmobile center of gravity.

Abstract: A fuel cell vehicle is provided with a temperature tolerant exhaust system that eliminates the need for exhaust pipes, pipe routing, support systems, and ground clearance issues. The exhaust system includes a fuel cell exhaust pipe in fluid communication with a fuel cell stack and an exhaust tube. The exhaust tube is supported within an exhaust channel that extends along and forms a part of the underbody of the fuel cell vehicle. Alternatively, the exhaust tube is formed within the interior of the exhaust channel.

Abstract: A vehicle includes a PCU serving as a power control unit controlling the electric power for vehicle running, a battery storing the electric power for vehicle running, and an EHC serving as an electrically heated catalyst. The PCU includes a converter, an inverter, and a positive line and a negative line each connecting the converter and the inverter. The converter boosts a voltage VL output from the battery to a requested voltage value VHsys. The EHC has a positive end connected to the positive line. The EHC also has a negative end connected to the negative line.

Abstract: A holding device, for the holding of a component part of an exhaust system on a peripheral structure, more preferably of a vehicle equipped with the exhaust system, has a first connecting point for fastening the holding device to the component part of the exhaust system and a second connecting point for fastening the holding device to the structure. A coupling device is arranged between the connecting points which makes possible reversible relative movements between the connecting points. For improved holding function, the coupling device is configured such that in at least in one active direction the coupling device has a speed-dependent or frequency-dependent stiffness. The coupling device has a lower stiffness with slower or low-frequency relative movements than with faster or high-frequency relative movements.

Abstract: A mounting structure is provided for facilitating attachment and detachment of a diesel particulate filter without detaching or removing a counter weight. The mounting structure is for installing the diesel particulate filter to remove particulate matter included in emission of the engine 10 of the forklift 1. The forklift 1 includes a vehicle body 2, a handling device 3 provided in front of the vehicle body 2, and a counter weight 4 provided at the rear of the vehicle body 2 and housing a diesel particulate filter 6. The diesel particulate filter 6 is detachably fitted to frames 61, 62 that are provided in the counter weight 4. The counter weight 4 has an opening 4a extending thereinto, which is sized so that the diesel particulate filter 6 can pass through the opening 4a vertically.

Abstract: A modular exhaust carrier for an engine is provided. The modular exhaust carrier includes a first concave shell member and a second concave shell member. The first concave shell member is configured to define one half of an exhaust air passage. Moreover, the first concave shell member either includes a solid wall configuration or a dust ejector opening configuration. The second concave shell member is configured to define a second half of an exhaust air passage. The second concave shell member includes a solid wall configuration or a sensor housing configuration.

Abstract: Systems and methods are disclosed for improving the aerodynamic efficiency (e.g., reduce drag) on vehicles, such as class 8 tractors. In some disclosed examples, the systems and methods utilize exhausted gases from an internal combustion engine of the vehicle to direct a stream of gas forwardly of the vehicle. In other disclosed examples, the systems and methods utilize generated air flow from, for example, electric fans, engine driven or pneumatically/hydraulically driven pumps, etc., to direct a stream of gas forwardly of the vehicle for reducing the aerodynamic drag on vehicles. In yet other disclosed examples, the systems and methods utilize a unique configuration of the vehicle's radiator fan(s) in order to direct a stream of gas forwardly of the vehicle.

Abstract: An exhaust system protection device is described that can be installed on the exhaust pipe of a vehicle. The device is designed to protect valuable components of the exhaust system from unauthorized removal. The device has a first locking collar that is configured to be removably positioned around the exhaust system of the vehicle. The first locking collar is positioned adjacent to the first end of the component that is to be protected. A second locking collar is removably positioned around the exhaust system adjacent the second end of the component that is to be protected. An elongated member extends from the first locking collar to the second locking collar. The elongated member is positioned around the component in a manner whereby the component cannot be removed from the exhaust system between the elongated member.

Abstract: An exhaust device of a vehicle having a V-engine including a front cylinder and a rear cylinder, includes at least one muffler disposed in a rear part of the vehicle, a front-cylinder exhaust pipe which is connected to a front surface of the front cylinder and which reaches the muffler, and a rear-cylinder exhaust pipe which is connected to a rear surface of the rear cylinder and which reaches the muffler. The front-cylinder exhaust pipe is curved rearward at a curved portion from a connecting portion between the front-cylinder exhaust pipe and the front cylinder inward of the side frame in the lateral direction. The front-cylinder exhaust pipe is located outward in the lateral direction with a fixed space from the engine, and extends toward a rear part of the vehicle substantially along the side frame as viewed from above.

Abstract: An exhaust tail pipe includes a front outer tube, an inner tube and a rear tail pipe. The inner tube has a plurality of screw holes on one side mating a plurality of apertures formed on a rear coupling portion of the front outer tube to be fastened together by a plurality of bolts. The rear coupling portion is coupled on the front end of the rear tail pipe so that the rear section of the inner tube is held at the rear end of the rear tail pipe and fastened together by welding. Such a structure allows the front outer tube and rear tail pipe to be made of different materials, thus can maintain aesthetic appeal of the appearance to enhance product value.

Abstract: Air flowing through a secondary air inducting conduit of a motorcycle is effectively cooled to enhance combustion efficiency of exhaust gas in a catalyzer. A part of the secondary air inducting conduit is exposed to a space behind a front wheel and in front of an engine, and thus acts as a secondary air cooling conduit section for cooling down secondary air flowing through the secondary air inducting conduit.

Abstract: A muffler mounting structure of a vehicle, particularly a straddle-type four-wheeled vehicle. The muffler mounting structure is provided with a muffler, at least one muffler mounting portion provided in a body frame and having a mounting hole, and at least one mounted bracket provided in an upper part of the muffler and disposed on an upper surface of the muffler mounting portion. The mounted bracket having a fixing member insertion hole passing in the up and down direction, and at least one fixing member inserted into the fixing member insertion hole from the upper side and fixed to the mounting hole.

Abstract: A cooling system is provided for a thermoelectric power generator and that is arranged in an exhaust gas line of an internal combustion engine for generating electric power while utilizing thermal energy of the exhaust gas. The thermoelectric power generator has its own coolant circuit, which also serves to raise the temperature of the components of the internal combustion engine, the chassis, and/or the transmission or serves to heat the passenger compartment. This offers the added utility gained from a faster temperature rise of transmission lubricants and lubricants of the internal combustion engine, as well as from heating the passenger compartment and the rear axle differential and, thus, offers a reduction of carbon dioxide emissions (CO2).

Abstract: A utility vehicle includes an engine accommodated in an engine room below a seat; an engine room side wall defining the engine room and covering the engine from rightward or from leftward; and a cooling fan disposed at one of right and left sides of the engine or and configured to supply cooling air to an interior of the engine room via the engine room side wall.

Abstract: The present invention relates to the exhaust gas guiding of a road milling machine. The road milling machine comprises an internal combustion engine, an engine air inlet, via which the engine air flows from the outside to the internal combustion engine, an engine air outlet, via which the engine air is conducted out of the road milling machine, a device for generating a flow movement of the engine air from the engine air inlet to the engine air outlet, and an exhaust system which is implemented for discharging the exhaust gases occurring during operation of the internal combustion engine from the internal combustion engine out of the road milling machine, having an exhaust gas outlet. The engine air is used to cool the exhaust gas.

Abstract: A saddle-ride vehicle for reducing air resistance flowing toward the rear of the vehicle. A saddle-ride type vehicle includes a front cowl in a vehicle front part and a rear cowl provided in a vehicle rear part. The rear cowl is provided with a bulging part protruding to the left and right in a vehicle widthwise direction. In addition, the bulging part protrudes outward of the rear edges of the front cowl in the vehicle widthwise direction. Further, side surfaces of the bulging part are each formed in a curved shape which bulges toward an outside of the vehicle in a plan view of the vehicle. Furthermore, a peak part which is located at an outermost edge of the side surface in the vehicle widthwise direction is located at a position closer to the front of the vehicle within a length of the bulging part in a vehicle front-rear direction.

Abstract: A construction machine that permits an exhaust gas after-treatment device to be disposed while suppressing an increase of height. An upper surface of a hydraulic pump is positioned lower than an upper surface of an engine, a tank device having at least one of a working oil tank and a fuel tank is provided at a rear portion thereof with a small height portion which has an upper surface of a height almost equal to or smaller than the height of the upper surface of the hydraulic tank, and an exhaust gas after-treatment device is disposed at a position above both the small height portion and the hydraulic pump.

Abstract: A vehicle, such as a motorcycle, can include an exhaust pipe connected to a back or rear side of an engine of the vehicle. An intermediate portion of the exhaust pipe can extend along a side of the engine from a rear portion connected to the rear side of the engine. A front portion of the exhaust pipe can extend from the intermediate portion along a front of the engine, and an exhaust portion can extend from the intermediate portion along a side of the engine opposite to the intermediate portion side.

Abstract: An exhaust pipe connected to an exhaust port of an engine and an expansion chamber is disposed in the vicinity of the engine. A main tube is provided that extends rearwardly from a head pipe disposed at the front side of a main body. An engine having a cylinder extending upwardly from a crankcase is disposed under the main tube with an exhaust port open at the front side of the cylinder. A first exhaust pipe is provided that is connected to the exhaust port. A down tube is disposed on the center line in the left-right direction of the main body. The exhaust port disposed behind the down tube is deviatingly open at one side from the center line. The first exhaust pipe extends forward from one side of the down tube, and to the other side of the down tube, subsequently turns, and extends again to one side.

Abstract: A fuel cell vehicle is provided with a temperature tolerant exhaust system that eliminates the need for exhaust pipes, pipe routing, support systems, and ground clearance issues. The exhaust system includes a fuel cell exhaust pipe in fluid communication with a fuel cell stack and an exhaust tube. The exhaust tube is supported within an exhaust channel that extends along and forms a part of the underbody of the fuel cell vehicle. Alternatively, the exhaust tube is formed within the interior of the exhaust channel.

Abstract: A continuously variable transmission as a speed change unit is inclined such that an upper portion of the transmission is displaced more than a lower portion of the transmission toward one side in a lateral direction of a vehicle body. Thereby, a space on the other side of the upper portion of the transmission in a vehicle body frame is enlarged, and a muffler is arranged in the space. The vehicle body frame may an inverted trapezoid shape, when viewed in a longitudinal direction, with an imaginary line connecting upper ends of left and right vertical frames as an upper base and an imaginary line connecting lower ends of the vertical frames as a lower base. Inside the trapezoid, a longitudinally oriented long muffler is arranged in a vicinity of one of the upper left and right corners of the trapezoid.

Abstract: A gate-shaped muffler mount including front and rear leg portions and a muffler attaching portion is attached to a mounting bracket for supporting an engine with bolts so as to straddle a hydraulic pump. One of mounting holes has a diameter larger than the diameter of the bolt, and the muffler mount is therefore rotatable around the other bolt along the axial direction of a bellows. By this rotation, the bellows can be positionally adjusted in the axial direction relative to an engine exhaust pipe so that assembly errors can be absorbed.

Abstract: An elastomeric isolator has an elastomeric body which incorporates an inner structural member and an outer structural member. The elastomeric body includes a shear hub extending between radial flanges defined by the inner and outer structural members that undergoes shearing stresses during deflection of the elastomeric isolator. The inner and outer structural members are designed to provide a travel stop for the elastomeric isolator in order to avoid compression of the shear hub during high loads. The elastomeric bushing can also include an optional integral elastomeric heat shield which protects the shear hub.

Abstract: An exhaust system (3) for an internal combustion engine (2), especially of a motor vehicle (1), is provided with at least one exhaust pipe (10), which carries an exhaust gas flow (11) away from the internal combustion engine (2) during the operation of the internal combustion engine (2). An active exhaust muffler (12) is provided with a housing (13) that is acoustically connected to the exhaust pipe (10) via a connection pipe (15). Damage to the exhaust muffler (12) is avoided by actively and/or passively cooling the connection pipe (15).

Abstract: An ammonia selective reduction-type NOx catalyst (48) is interposed in an exhaust passage of an engine (2) provided in a series-type hybrid electric vehicle (1), and a urea water injector (52) is disposed in the exhaust passage to supply a urea water into exhaust gas existing upstream of the ammonia selective reduction-type NOx catalyst (48). The engine (2) is started and stopped in accordance with the storage state of a battery (8), and the urea water injector (52) is controlled in accordance with the operating state of the engine (2). When the engine (2) is to be stopped, an adsorption increasing operation for increasing the amount of ammonia adsorbed by the ammonia selective reduction-type NOx catalyst (48) is executed over a predetermined period before the engine (2) is stopped.

Abstract: For turbo-diesel application trucks, it is desirable to enable the quickest exit of the exhaust from the engine because, in most cases, the exhaust gas temperatures of these engines are very high. Thus, a hole is formed in the hood of the trucks and the exhaust stack is slid through the hole to permit the quickest exit of the exhaust into the atmosphere. However although the hood may be non-horizontally oriented, the stack should be kept in a vertical position. Thus, a stack mounting basket is positioned beneath the hole having three widely separated outwardly extending threaded bolt extensions that are positioned within three slotted downwardly extending elongated members affixed to the hood. The relative positions of the elongated members with respect to the threaded bolt extensions are adjusted, and nuts are tightened over the elongated members to permit the stack to maintain a vertical orientation.

Abstract: A flanged joint (1) of an exhaust system of an internal combustion engine, especially of a motor vehicle, is provided for fastening a tubular body (4) of the exhaust system to another component (5). The flanged joint includes a tube bell (2) formed at the end area of the tubular body (4) as well as a ring-shaped flange (3), which surrounds the tubular body (4) on a side of the tube bell (2) facing away from the other component (5) and which has a plurality of fastening sites (6, 7) for connection to the other component (5).

Abstract: An exhaust system for a motorcycle has a bent portion that extends upward from a position below a seat toward the seat and is then bent downward. A heat insulating plate is disposed in a space between the bent portion and the seat so as to cover the bent portion. Influence of exhaust heat on the rider and upsizing of the heat insulating plate are thereby suppressed.

Abstract: An exhaust system for an engine mounted within an engine compartment. The exhaust system may include a first tube having a venturi portion. The first tube may be connected to an outlet of the engine. The exhaust system may further include a second tube disposed over the first tube to define a flow passage in fluid communication with the engine compartment. Further, an opening may be defined on the second tube adjacent to the venturi portion of the first tube.

Abstract: Electrical power from a dynamic braking process in an off-highway vehicle is used to power an auxiliary system in the vehicle. The auxiliary system may be a urea storage container heating unit or a particulate filter regeneration heating unit. When dynamic braking electricity is unavailable, and to the extent the dynamic braking electricity is insufficient for powering the auxiliary system, electrical power from an energy device on board the vehicle is used to power the auxiliary system. The energy device may be an auxiliary energy storage device, devoted for use in powering the auxiliary system.

Abstract: A hybrid vehicle emission control method may include operating the hybrid vehicle in a first mode during which a combustion engine is off and an electric motor propels the hybrid vehicle. An electrically heated selective catalytic reduction catalyst (EHSCR) may be energized during the first mode. The vehicle may be operated in a second mode after the first mode during which the engine propels the hybrid vehicle.

Abstract: The present invention relates to an exhaust system hanger of a vehicle, in which two protrusions facing and spaced apart from each other are integrally formed at a center portion between both distal ends of the hanger, and the two protrusions selectively contact each other to increase a spring constant, when the shape of the hanger is elastically deformed by external force beyond a predetermined elastic value.

Abstract: A soot preventing type tail trim may include a tail pipe discharging exhaust gas, and a body enclosing an outer circumference of the tail pipe with a predetermined space therebetween, such that wind may be allowed to flow into the predetermined space and to be discharged therefrom to generate a separation layer in the exhaust gas passing the tail pipe by the wind.

Abstract: A vehicle with an engine connection. The vehicle further includes an engine, a rear wheel and a rear suspension that absorbs an impact when the rear wheel moves vertically. The engine connection has a front end connected to a rear surface of the engine, and a coil-shaped portion provided between the rear suspension and the rear wheel. A front end of the coil-shaped portion is connected to a rear end of the engine connection. The exhaust pipe is configured to enable division into the engine connection and the coil-shaped portion.

Abstract: An apparatus for designing a tubing configuration comprising modules that receive tube design input, interpret a tube design input, calculate a final tube design, and display a final tube design. The tube design input may include point locations, bend criteria and end conditions, among others. The apparatus may further include modules that determine whether the tube design input exceeds a complexity threshold, comprises a minimum set of information, and comprises a conflicting or erroneous design. The apparatus may further include modules that determine and optimize the manufacturing cost as well as determine the manufacturability of the tube. The apparatus may further include modules that store operational challenges corresponding to emissions reduction features and secondary components.

Abstract: A motorcycle includes a muffler assembly including a muffler and a muffler cover arranged on one side of a rear wheel in a lateral direction. The motorcycle also includes a housing box resembling the muffler assembly and arranged substantially parallel to the muffler assembly on the other side of the rear wheel in the lateral direction. The housing box has a shape substantially similar to a shape of the muffler assembly, thereby forming a pseudo muffler assembly or replica muffler assembly.

Abstract: Engine exhaust is sent to a reformer, which produces hydrogen from fuel remaining in the exhaust. The hydrogen may be stored in a hydrogen tank, and may be used by a fuel cell to produce electricity to recharge a vehicle battery and/or to supply propulsion current to an electric propulsion system.