Class / Patent application number | Description | Number of patent applications / Date published |
060312000 | Pulsed, timed, tuned or resonating exhaust | 13 |
20080245061 | INFRARED SUPPRESSION SYSTEM - An InfraRed Suppression System (IRSS) vectors engine exhaust flow away from the exhaust manifold plane, the high aspect ratio exhaust duct defined as a ratio of a maximum nozzle length to a maximum nozzle width, the ratio greater than 2:1. | 10-09-2008 |
20090139216 | EGR PULSE ATTENUATION - A pulse attenuator for the EGR line of an internal combustion engine in which a main flow path has a pair of branch flow paths extending from the upstream portion of a venturi. The branch flow paths have a precisely determined length so as to reintroduce pulses back to the main flow path in a way that smoothes the flow. The pulses may be reconnected to the main flow path downstream of the point at which they are extracted or at the same point. The length of the branch passages may be different to provide attenuation of pulses at different engine rpms. | 06-04-2009 |
20100180583 | INTERNAL COMBUSTION ENGINE, VEHICLE, MARINE VESSEL, AND EXHAUSTING METHOD FOR INTERNAL COMBUSTION ENGINE - An internal combustion engine includes a structure that increases the velocity of exhaust gas. The internal combustion engine includes a branch section arranged to branch a shock wave propagating at a higher velocity than exhaust gas and to guide the branched shock wave, and a reflecting section provided in the branch section. The reflecting section is arranged to reflect and return the shock wave back to an exhaust path and cause the shock wave to collide against the exhaust gas, thereby increasing the pressure of the exhaust gas. In accompaniment with the exhaust gas passing a divergent section of a convergent-divergent nozzle, a new shock wave propagating in a downstream direction in the exhaust path is generated, and the temperature and pressure of the exhaust gas are decreased. | 07-22-2010 |
20100192556 | INTERNAL COMBUSTION ENGINE, VEHICLE, MARINE VESSEL, AND SECONDARY AIR SUPPLY METHOD FOR INTERNAL COMBUSTION ENGINE - An internal combustion engine capable of efficiently supplying air to an exhaust path even in a high load state. The internal combustion engine includes a convergent section, a divergent section, and a branch section. The branch section branches a shock wave, propagating in a downstream direction at a higher velocity than exhaust gas flowing into an exhaust path from a combustion chamber when an exhaust valve is opened, from a portion of the exhaust path which is upstream with respect to the divergent section, and propagates the shock wave back to the exhaust path. The exhaust gas is caused to pass the convergent section and to collide against the shock wave between the branch section and the divergent section so as to increase the pressure of the exhaust gas in the convergent section. Such exhaust gas is caused to pass the divergent section to generate a new shock wave. A secondary air supply system includes a supply section arranged to supply air to a portion of the exhaust path which is upstream with respect to the divergent section, using a negative pressure generated by the newly generated shock wave. | 08-05-2010 |
20100326060 | DEVICE AND METHOD FOR CONTROLLING VORTEX STRUCTURES IN A TURBULENT AIR JET - The proposed device for controlling vortex structures ( | 12-30-2010 |
20130019590 | DYNAMICALLY ADJUSTING TUNED EXHAUST SYSTEM - A method and apparatus, for adjusting an exhaust, having an at least one body element with a housing member having an at least one exhaust outlet. An at least one exhaust element is contained within the at least one body element with an at least one slip section and an at least one spring member. An at least one pressure regulating member extends and is slidingly held between the at least one body element and the at least one exhaust element. The pressure regulating member separates a pressure chamber section within the housing, wherein the pressure regulating member is pressed against the at least one spring member by pressures built up by exiting exhaust gasses in the pressure chamber resulting in a variation in the length of the exhaust system. | 01-24-2013 |
20150315942 | EXHAUST GEOMETRY FOR PARTICLE GROUPING - An exhaust pipe for a fuel burning engine including a hollow body, the body having an internal surface, an external surface, a first open end, a second open end and a longitudinal axis, wherein the internal surface is shaped to form standing cyclic wave geometry having at least 2 cycles (c). When gas containing inhalable particles enters the exhaust pipe through the first open end and flows out of the exhaust pipe through the second open end, a substantial amount of inhalable particles are grouped to form filterable particles. | 11-05-2015 |
20150361841 | VEHICLE EXHAUST SYSTEM WITH RESONANCE DAMPING - A vehicle exhaust system includes an exhaust component having an outer surface and an inner surface that defines an internal exhaust component cavity. At least one bleed hole is formed in the exhaust component to reduce a resonance frequency. The bleed hole comprises a discontinuous opening into the exhaust component cavity. | 12-17-2015 |
20160003116 | ENGINE-EXHAUST-SYSTEM APPARATUS AND PACKAGE-TYPE ENGINE ELECTRIC POWER GENERATOR - Disclosed is an engine-exhaust-system apparatus including: a main body that reduces noise generated by exhaust gas; and an exhaust outlet tube that includes an insertion section inserted into the main body, exhaust gas in the main body being discharged outside via the exhaust outlet tube, wherein the insertion section has an open end with a brim portion that spreads beyond a tube diameter of the insertion section. | 01-07-2016 |
20160084127 | EXHAUST MUFFLER DEVICE FOR COMBUSTION ENGINE - An exhaust muffler device for an combustion engine includes: a first expansion chamber into which exhaust gas from a combustion engine flows; a second expansion chamber disposed downstream of the first expansion chamber; a resonance chamber that is disposed adjacent to the first expansion chamber and communicates with an exhaust passage; a discharge passage through which the exhaust gas that flows into the resonance chamber is discharged to the outside; and an exhaust valve disposed in a second partition wall between the first expansion chamber and the resonance chamber. The exhaust valve opens when pressure in the first expansion chamber attains a value greater than a predetermined value. | 03-24-2016 |
060313000 | Correlated exhausts from plural cylinders | 1 |
20100192557 | MULTI-CYLINDER INTERNAL COMBUSTION ENGINE, VEHICLE, MARINE VESSEL, AND EXHAUSTING METHOD FOR MULTI-CYLINDER INTERNAL COMBUSTION ENGINE - A multi-cylinder internal combustion engine capable of decreasing the pressure or temperature of exhaust gas. The internal combustion engine includes at least two cylinders and an exhaust path. The exhaust path includes a convergent-divergent nozzle and an exhaust merging section provided upstream with respect to an upstream end of the divergent section arranged to connect only exhaust ports of combustion chambers for which the opening periods do not overlap. A shock wave propagating in a merging upstream section is branched at a connection section, and the branched shock wave is reflected by an exhaust valve of cylinder and collides against the exhaust gas. In accompaniment with the passage of the exhaust gas having the pressure increased by the shock wave through the convergent-divergent nozzle, a new shock wave propagating in a downstream direction in the exhaust path is generated and also an expansion wave propagating in an upstream direction in the exhaust path is generated. Thus, the temperature and pressure of the exhaust gas are significantly decreased. | 08-05-2010 |
060314000 | Two-cycle engine | 2 |
20090313981 | Externally adjustable modular tuned exhaust system - A modular tuned exhaust pipe coupled to a remote controlled vehicle having a two stroke motor, having a body portion with an exhaust port. A convergent cone section is internally and slidingly mounted within the body portion and has an at last one exhaust hole. An adjustment Mechanism coupled to the convergent cone section. The turning of the adjustment mechanism slidingly moving the convergent cone within the body portion to adjust the tuned length of the modular tuned exhaust pipe. And a pressure adjustment screw, the pressure adjustment screw penetrating the body portion such that turning of the pressure adjustment screw increases or decreases the pressure within the modular tuned pipe. | 12-24-2009 |
20130125535 | EXHAUST SYSTEM FOR TWO-STROKE INTERNAL COMBUSTION ENGINE - An exhaust pipe for two-stroke, internal-combustion engines in which there are multiple exhaust expansion chambers, each within one another, used in combination, the multiple chambers allow for the combustible fuel/air mixture to be delivered in more optimal reflective pressure waves throughout the RPM range of the engine. By changing the number of the chambers, their size and shape, the design of the exhaust pipe can be tuned for torque and power while requiring a minimum of space. | 05-23-2013 |