Abstract: A fixing device for an automobile muffler is constructed to effectively support and minimize the vertical and transverse movement of a muffler in relation to a car body via a resilient hanger that is diagonally angled. The rear part of the resilient hanger is attached with a cover bracket and a body side bracket, wherein the cover bracket is formed with a vertical flange surface and the body side bracket is formed with a vertical protrusion surface, thereby effectively support any longitudinal movement of the muffler against the vehicle, and increasing the rigidity of connecting parts between the muffler and an exhaust pipe via the cover bracket.

Abstract: An exhaust system for an internal combustion engine having a first cylinder and a second cylinder from which pulses of exhaust gas exit and are routed along separate paths towards the exhaust mufflers. The exhaust system independently routes the pulses of exhaust gas from the two cylinders. The exhaust gases that are expelled from the first cylinder are routed through a first exhaust pipe. The exhaust gases that are expelled from the second cylinder are routed through a second exhaust pipe assembly. The second exhaust pipe assembly routes the exhaust gasses from an exhaust port for the second cylinder laterally across the motorcycle to achieve a true dual exhaust system. The second exhaust pipe assembly provides an approximate equal length flow path as compared to the path used by the exhaust gasses that are expelled from the first cylinder.

Abstract: A gas exhaust structure of a fuel-cell-powered vehicle includes a recess formed in a rear bumper with a surrounding wall. An opening of the recess is covered with louvers to allow ventilation, thereby to form a chamber. A discharge end of the discharge pipe is mounted to the chamber. An exhaust gas including hydrogen is guided through the discharge pipe into the chamber and is emitted from the opening to the outside of the vehicle.

Abstract: Hanger systems are provided for securing exhaust systems to the undercarriage of the automobile. One such system includes a hanger that incorporates an arm, a bushing defining an orifice, a retaining member, and a flange. The orifice receives a proximal end of the arm, which is loosely retained by the bushing so that the arm is able to rotate. The retaining member engages an exterior surface of the bushing and is formed, at least partially, of a strip of material. At least a portion of the strip of material is shaped to conform to at least a portion of the exterior surface of the bushing. The flange extends outwardly from the bushing. So configured, the hanger mounts to the automobile by attaching the flange to the frame member. The arm can be secured to a portion of the exhaust system so that the exhaust pipe is securely retained. Methods and other systems also are provided.

Abstract: An exhaust system provided with a tail pipe arrangement which extends adjacent to a wall part of a body of a motor vehicle, so that the exhaust system or the tail pipe arrangement, on the one hand, has sufficient space for relative movements and, on the other hand, is integrated in the visible dimensional structure of the vehicle body, viewed in the driving direction, the tail pipe arrangement is situated by a free end in front of the wall part, and, viewed from the rearward side of the motor vehicle upon the tail pipe arrangement, a first countour of an end area of the wall part corresponds basically at least in sections with an exterior second contour of the tail pipe arrangement.

Abstract: A snowmobile has a frame construction that defines a recess above a drive unit. The recess is formed by a horizontal member and a pair of vertical members. A portion of the exhaust system extends within the recess at a location above the drive unit. An exhaust system cooling passage is provided to reduce temperature rise of the exhaust system.

Abstract: An exhaust system for an internal combustion engine having a first cylinder and a second cylinder from which pulses of exhaust gas exit and are routed along separate paths towards the exhaust mufflers. The exhaust system independently routes the pulses of exhaust gas from the two cylinders. The exhaust gases that are expelled from the first cylinder are routed through a first exhaust pipe. The exhaust gases that are expelled from the second cylinder are routed through a second exhaust pipe assembly. The second exhaust pipe assembly routes the exhaust gasses from an exhaust port for the second cylinder laterally across the motorcycle to achieve a true dual exhaust system. The second exhaust pipe assembly provides an approximate equal length flow path as compared to the path used by the exhaust gasses that are expelled from the first cylinder.

Abstract: A snowmobile has a frame construction that defines a recess above a drive unit. The recess is formed by a horizontal member and a pair of vertical members. A portion of the exhaust system extends within the recess at a location above the drive unit.

Abstract: An exhaust system has a plurality of isolator assemblies which are used to mount the exhaust system to a vehicle. Each of the isolator assemblies has an exhaust rod which is attached to a component of the exhaust system and which includes a first end which engages an elastomeric isolator attached to the vehicle through a U-shaped member. Each of the first ends of the exhaust rods are aligned to be generally parallel with the longitudinal axis of the vehicle when the exhaust system is installed in the vehicle.

Abstract: A catalytic converter is especially adapted for placement to a motorized scooter. The scooter includes a front steered wheel, a rear driven wheel, and a structural tube extending between the wheels. A motor driving the rear driven wheel has an exhaust emission line. An exhaust tube having first and second open ends is provided. The exhaust tube is mounted through a sidewall of the main structural tube with a first end disposed exterior of the main structural tube and a second end discharging interiorly of the main structural tube. The exhaust tube has a catalytic converter preferably at the second end thereof. A flexible connection is provided between the exhaust emission of the motor and the first end of the exhaust tube. In operation, exhaust flows to heat the catalytic converter concentrically of the main structural tube and the converter operates exothermically at high temperature at the second end of the exhaust tube.

Abstract: An auxiliary silencer system for connection with the exhaust system of an all terrain vehicle includes a fiberglass packed flow through silencer having a rigid elbow connected with the existing tail pipe and positioned by adjustable brackets transversely on the vehicle in alignment with the existing system.

Abstract: A pickup truck and exhaust system combination is designed for a pickup truck having a cab and a bed extending rearwardly therefrom. The bed has a load floor bounded by a front wall adjacent the cab and a pair of side walls. The bed has an opening defined therein. The truck has an engine and an exhaust pipe extending rearwardly under the cab to an outlet end. A flexible exhaust coupler has a first end in fluid communication with the outlet end of the exhaust pipe and a second end in fluid communication with the first end. A hollow elongated collector is disposed on the floor of the truck bed adjacent the front wall. The collector has a first end and an opposed second end with the midportion therebetween. The collector also has an inlet defined in the midportion, with the inlet being connected to the second end of the coupler through the opening in the bed.

Abstract: The exhaust system has an exhaust comprising at least one silencer and/or catalytic converter which has a housing with a housing casing having a material thickness of not more than 1 mm and with housing ends. The exhaust furthermore has metallic pipes which are rigidly connected to said housing ends and at least one of which has a material thickness of, likewise, not more than 1 mm. The retaining element for holding the exhaust on the vehicle body has, for each housing end, a holder with a metallic retaining member connected to the pipe connected to the housing end or possibly to the housing itself. The at least one pipe having a material thickness of not more than 1 mm and to which the retaining member is connected or the housing casing to which the retaining member is connected is surrounded by a sleeve-like reinforcing element to which the retaining member is fastened, for example, by welding or brazing or adhesive bonding.

Abstract: A band-like member which is made to wrap on an outer periphery of an exhaust pipe is interposed between the exhaust pipe and a heat insulator covering the exhaust pipe. Both end portions of the band-like member in the length direction and attaching portions formed at a pair of edge portions along the length direction of the heat insulator oppose each other and overlap each other. These members are fastened together by a bolt and nut, which have interposed therebetween a collar to ensure proper separation of ends of the band-like member and heat insulator.

Abstract: A mounting structure of an exhaust pipe system in a vehicle capable of making a magnitude of a moment acting on the exhaust pipe system as small as possible by means of a simple constitution. In a mounting structure of an exhaust pipe system in a vehicle the exhaust pipe system is connected to an engine loaded onto the vehicle and for guiding exhaust gas discharged from the engine to the ambient air, on a vehicle body frame constituting the vehicle, wherein the exhaust pipe system is constituted so as to be connected to the vehicle body frame in a position substantially upwardly from a position G of the center of gravity of the exhaust pipe system.

Abstract: A suspension fitting for a motor vehicle exhaust system, the fitting comprising a top and bottom strength members interconnected by a resilient system comprising firstly a single central support arm and secondly a flexible limiting ring surrounding the support arm to limit relative travel between the strength members in a direction corresponding to the support arm lengthening. The top and bottom strength members have respective downwardly and upwardly extending rigid limbs which are placed facing each other on a horizontal axis perpendicular to the general direction of the exhaust system so as to come into abutment against each other and limit relative travel between the strength members along the axis.

Abstract: A vehicle front structure which is partitioned into an engine compartment and a passenger compartment with a dashboard. An exhaust pipe is extended from a rear part of an engine accommodated in the engine compartment to a rear part of the vehicle, beneath the passenger compartment. Between the engine and the dashboard, a steering gearbox, a harness and a plurality of pipes extending transversely of the vehicle are arranged. A heat shielding plate is interposed between the steering gearbox, harness and pipes as a group, and the exhaust pipe. The heat shielding plate blocks heat emitted from the engine and the exhaust pipe from affecting the steering gearbox, harness and pipes.

Abstract: A construction machine is disclosed which comprises an upper rotating structure formed by a revolving frame, an engine room formed at a rear portion of the upper rotating structure and in which are accommodated at least an engine, a radiator, and a muffler, a compartment formed within the engine room and in which the muffler is accommodated, and a vent portion formed in the compartment to make communication between the outside air and the compartment through an underside of the upper rotating structure. According to this construction, heat generated from the muffler is cut off in the compartment and is not transmitted into the engine room, and the outside air is introduced into the compartment through the vent portion to suppress an increase of temperature. Consequently, it is possible to prevent deterioration in the cooling efficiency of the radiator.

Abstract: An exhaust pipe layout structure for vehicles comprises a first exhaust pipe extending from an exhaust manifold coupled to a rear side of a cylinder head of an engine toward the rear of a vehicle body, a second exhaust pipe and a catalyzer which are connected to each other with two flexible joints. A first inclined portion inclines toward the rear in a downward direction and a second inclined portion inclines toward the rear in an upward direction are provided in front of and behind a lowest point of the first and second exhaust pipes, respectively, and a drive shaft for a front wheel and a steering gear box for the front wheels are disposed in front of and behind the first inclined portion, respectively.

Abstract: A suspension fitting for a motor vehicle exhaust system, the fitting comprising a top and bottom strength members interconnected by a resilient system comprising firstly a single central support arm and secondly a flexible limiting ring surrounding the support arm to limit relative travel between the strength members in a direction corresponding to the support arm lengthening. The top and bottom strength members have respective downwardly and upwardly extending rigid limbs which are placed facing each other on a horizontal axis perpendicular to the general direction of the exhaust system so as to come into abutment against each other and limit relative travel between the strength members along the axis.

Abstract: The exhaust system has an exhaust comprising at least one silencer and/or catalytic converter which has a housing with a housing casing having a material thickness of not more than 1 mm and with housing ends. The exhaust furthermore has metallic pipes which are rigidly connected to said housing ends and at least one of which has a material thickness of, likewise, not more than 1 mm. The retaining means for holding the exhaust on the vehicle body has, for each housing end, a holder with a metallic retaining member connected to the pipe connected to the housing end or possibly to the housing itself. The at least one pipe having a material thickness of not more than 1 mm and to which the retaining member is connected or the housing casing to which the retaining member is connected is surrounded by a sleeve-like reinforcing element to which the retaining member is fastened, for example, by welding or brazing or adhesive bonding.

Abstract: A mounting structure of an exhaust pipe system in a vehicle capable of making a magnitude of a moment acting on the exhaust pipe system as small as possible by means of a simple constitution. In a mounting structure of an exhaust pipe system in a vehicle the exhaust pipe system is connected to an engine loaded onto the vehicle and for guiding exhaust gas discharged from the engine to the ambient air, on a vehicle body frame constituting the vehicle, wherein the exhaust pipe system is constituted so as to be connected to the vehicle body frame in a position substantially upwardly from a position G of the center of gravity of the exhaust pipe system.

Abstract: The exhaust system has an exhaust with at least one silencer and/or catalytic converter which has a housing having a housing casing with a wall thickness of not more than 1 mm and having housing ends, and metallic pipes which are rigidly connected to the latter and at least one of which has a wall thickness of, likewise, not more than 1 mm. The retaining means for holding the exhaust on the vehicle body have, for each housing end, a metallic retaining member connected to the pipe adjacent to the housing end. The at least one pipe with a wall thickness of not more than 1 mm is surrounded by a sleeve to which the retaining member is fastened, for example by welding or brazing or adhesive bonding.

Abstract: A motor vehicle has an internal combustion engine and an exhaust system with an exhaust which has two deformable pipe members and at least two casings arranged downstream thereof and belonging to a catalytic converter and/or silencer. At least the last casing, relative to the direction of flow of the exhaust gas, of the exhaust, together with the first casing, defines a straight connecting line passing through the two casings and is held on the vehicle body by means of at least partially rubber-elastic connecting members in such a way that it is deflected by a force parallel to the straight connecting line more than by a force of equal magnitude at right angles to the straight connecting line. This enables the casings to be connected to one another exclusively by rigid exhaust parts and oscillations of the second casing to be kept small.