Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8091344 | System for modifying exhaust gas flow through an aftertreatment device An exhaust gas aftertreatment device for an internal combustion engine producing the exhaust gas comprises an inlet configured to receive the exhaust gas, an outlet from which the exhaust gas exits the device, an aftertreatment element disposed between the inlet and... | 01/10/2012 |
| 7895830 | Exhaust gas purification system for internal combustion engine and exhaust gas purification method therefor If an exhaust throttle valve changes to ON state from OFF state under a filter regeneration control condition for regenerating a PM filter, a differential pressure sensor detects a change of a differential pressure following an operation of the exhaust throttle valv... | 03/01/2011 |
| 7877985 | Exhaust gas purification system for internal combustion engine The present invention is directed to an exhaust gas purification system for an internal combustion engine that performs high pressure PM filter regeneration process by decreasing the degree of opening of an exhaust throttle valve in regenerating the particulate matt... | 02/01/2011 |
| 7406823 | Exhaust gas throttle valve for engines An exhaust gas throttle valve disposed in the exhaust system of an engine, wherein the center axis of rotation of a valve shaft 5 is set at a position deviated from the center axis of the exhaust gas passage, and two recessed portions 11 are symmetrica... | 08/05/2008 |
| 7398645 | Reversing flow catalytic converter for internal combustion engines A compact reversing flow catalytic converter with protection from overheating includes a valve unit which directs exhaust gases through a container filled with catalytic material to permit a bypass of catalytic material when a temperature of the material exceeds a p... | 07/15/2008 |
| 7395660 | Exhaust gas purification system for an internal combustion engine The present invention has for its problem to be solved to provide a technique in which in an exhaust gas purification system for an internal combustion engine with a filter being arranged on an exhaust passage for trapping PM in an exhaust gas, it is possible to sup... | 07/08/2008 |
| 7343733 | System and method for monitoring the efficiency of a catalyst treating engine exhaust A method for monitoring the efficiency of a catalyst includes providing an oxygen sensor between an engine and the catalyst to generate an output signal indicative of oxygen content. The output signal is sampled to provide a first value indicative of the oxygen cont... | 03/18/2008 |
| 7343736 | Flexible exhaust emission aftertreatment system for compression cycle diesel engines An apparatus for the reduction of nitric oxides (NOx) and particulate matter of exhaust emissions from a diesel engine having an electronic control module. The apparatus includes a first treatment device for reducing particulate matter and a second treatment device ... | 03/18/2008 |
| 7337608 | Exhaust gas cleaning system An exhaust gas purifying system causes less torque fluctuation and is capable of preventing the occurrence of white smoke in a regeneration control operation for regenerating a continuous regeneration DPF 3. When the continuous regeneration DPF 3 with ... | 03/04/2008 |
| 7337609 | Diesel exhaust system variable backpressure muffler The invention concerns diesel particulate filter regeneration in an exhaust system of a vehicle having a diesel engine. The particulate filter regeneration is selectively accomplished by actuating a particulate filter backpressure valve located downstream of the die... | 03/04/2008 |
| 7328574 | Exhaust line and motor vehicle equipped therewith The invention concerns an internal combustion engine exhaust line comprising an active noise reduction system with variable choke device, continuously regulated based on the instantaneous discharge rate pulses of exhaust gases exiting from the internal combustion en... | 02/12/2008 |
| 7325396 | Exhaust manifold An exhaust manifold includes an open/close valve that switches between either closing or opening the exhaust path of a collection section, and switches the exhaust path of the exhaust gas between passing through or not passing through a bypass path containing an ups... | 02/05/2008 |
| 7310942 | Exhaust passage control valve Exhaust passage control valve 10 may comprise housing 30, valve member 20, and helical torsion spring 40. Housing 30 has an exhaust passage. Exhaust gas from an internal combustion engine flows through the exhaust passage of the ho... | 12/25/2007 |
| 7275367 | Exhaust pressure-raising device for an internal combustion engine There is provided an exhaust pressure-adjusting valve that is brought into a closed position due to a biasing force of a resilient body and is opened against the biasing force of the resilient body due to the exhaust pressure in an exhaust channel, which is raised i... | 10/02/2007 |
| 7269942 | Wall flow particulate trap system A wall-flow particulate trap system regenerated by reverse flow of filtered exhaust gas through porous walls of a plurality of tubular passages is disclosed. The system includes a particulate trap having an inlet and an outlet, the particulate trap adapted to receiv... | 09/18/2007 |
| 7263824 | Exhaust gas aftertreatment device for an internal combustion engine An exhaust gas aftertreatment device for an internal combustion engine comprises an inlet configured to receive the exhaust gas, an outlet from which the exhaust gas exits the device, a first passageway defined between the inlet and the outlet, and a second passagew... | 09/04/2007 |
| 7263823 | System for measuring NOx content of exhaust gas A system for measuring NOx content of an exhaust gas produced includes at least one controllable valve operable to direct exhaust gas to a NOx sensor only when measurement of the NOx content is desired and to otherwise expose the NOx sensor to ambient air. A control... | 09/04/2007 |
| 7251932 | Exhaust system and method for controlling exhaust gas flow and temperature through regenerable exhaust gas treatment devices A reconfigurable exhaust system provides selective positioning of exhaust gas treatment devices either near, or spaced from, the exhaust gas outlet port of a turbine of a turbocharged Diesel engine. In some embodiments, auxiliary air or a heat exchanger are arranged... | 08/07/2007 |
| 7249455 | Method and apparatus for regenerating a nitrogen oxides absorber A diesel engine exhaust system includes a NOx absorber and a diesel fuel fired burner operated at an enriched fuel-to-air ratio to generate a sufficient quantity of CO and H2 for regenerating the NOx absorber. A method of operating a diesel exhaust system... | 07/31/2007 |
| 7243490 | 4-cycle engine for motorcycle A 4-cycle engine for a motorcycle has a secondary-air supplier for supplying secondary air to exhaust ducts. The engine includes a recess, which is depressed toward the engine, on a cylinder-head cover for holding a control valve of the secondary-air supplier. The r... | 07/17/2007 |
| 7234295 | Emission reduction apparatus An emission reduction apparatus includes first and second exhaust paths carrying respective first and second Nox traps. One trap has a smaller capacity than the other and is operative while the larger trap regenerates, allowing symmetric operation. ... | 06/26/2007 |
| 7216479 | Exhaust emission control system for vehicle internal combustion engine Normally, at the time of cold-start of an internal combustion engine or the like, the flow of exhaust in an exhaust passage of the internal combustion engine is suppressed or two-stage combustion is carried out so as to promote exhaust purification in an exhaust sys... | 05/15/2007 |
| 7189374 | Emissions control A diesel engine (1) has an exhaust system (4) and an oxidation catalyst (5a). Exhaust gas for recirculation is taken through an intake pipe (6) downstream of the catalyst, and preferably upstream of a filter (5b) for ... | 03/13/2007 |
| 7185678 | Orifice plate diffuser A noise reducing device for a pressurized fluid stream, i.e., a gas, includes a housing. An inlet end and an outlet end of the housing each have at least one orifice for passing a fluid therethrough. The inlet end orifice includes an inlet face and an outlet face an... | 03/06/2007 |
| 7185489 | Particulate trap A particulate trap has a housing and a plurality of filters disposed within the housing. The particulate trap also has a plurality of dividers fluidly isolating one or more of the plurality of filters into filter divisions. The particulate trap has at least one inle... | 03/06/2007 |
| 7178330 | Pressure detecting apparatus having solenoid valve and pressure sensor A secondary air pressure detecting apparatus includes a solenoid valve and a pressure sensor. The solenoid valve defines a secondary air passage that introduces secondary air from the air pump into the exhaust system of an engine. The solenoid valve opens and closes... | 02/20/2007 |
| 7178332 | Exhaust heat recovery system In an exhaust heat recovery system, electric power generation efficiency of a thermoelectric conversion element can be improved, and warming-up of a catalyst can be completed early, without using a complicated device. The exhaust heat recovery system according to th... | 02/20/2007 |
| 7165394 | Exhaust gas purification system for internal combustion engine An exhaust gas purification system for an internal combustion engine can quickly recover the exhaust gas purification ability of an exhaust gas purification device by increasing opportunities to release the SOx occluded in the exhaust gas purification device. In the... | 01/23/2007 |
| 7146803 | Method and arrangement for monitoring the operability of a secondary air system The invention relates to a method and an arrangement for monitoring the operability of a secondary air system of an internal combustion engine having an exhaust-gas system. The secondary air system includes a secondary air pump. In the method and arrangement, a sign... | 12/12/2006 |
| 7146797 | Exhaust gas purification system An exhaust gas purification system including a catching reactor for attracting particulate matters in an exhaust gas from an engine by electrostatic force, a main exhaust path and an auxiliary exhaust path provided on the exit side of the catching reactor, a PM filt... | 12/12/2006 |
| 7143578 | Exhaust system for enhanced reduction of nitrogen oxides and particulates from diesel engines A diesel engine aftertreatment exhaust system uses catalyzed soot filters for particulate matter reduction and urea SCR catalysts for NOx reduction on diesel engines in a combined system to lower particulate matter and NOx at the same time. With this integral emissi... | 12/05/2006 |
| 7140177 | Secondary air supply system and abnormality diagnosis method of secondary air supply system In a secondary air supply system, each of two branch portions of a secondary air supply pipe that is divided from a joint portion is provided with an air control valve, and the joint portion is provided with a pressure sensor and an auxiliary air control valve. The ... | 11/28/2006 |
| 7137381 | Indirect variable valve actuation for an internal combustion engine A reciprocating piston-type internal combustion engine includes an engine cylinder, an intake port, an intake runner providing a passage through which intake gas enters the cylinder through the intake port, an intake valve for opening and closing the intake port, an... | 11/21/2006 |
| 7131262 | Secondary airflow system for engine exhaust emission diagnostics In one example, a system for an engine having an intake system and an exhaust system is described. The system comprises: an airflow sensor coupled to the intake system; an air pump having at least an inlet side and an outlet side, said inlet side having a first coup... | 11/07/2006 |
| 7121088 | Automotive exhaust valve A valve assembly is adapted to be disposed in an automotive engine exhaust system at an outlet of an internal combustion engine. The assembly includes a valve body having an opening therethrough including an inlet portion and an outlet portion. A first valve and a s... | 10/17/2006 |
| 7117668 | Method and apparatus for rapid exhaust catalyst light-off An internal combustion engine is supplied with reformate from a hydrocarbon reformer at engine start-up and during engine warm-up. The reformate fuel mixture is fuel-lean at start-up to ensure that all the fuel is burned while the exhaust converter is thermally non-... | 10/10/2006 |
| 7111454 | Fuel control compensation for secondary air system flow variation An engine control system and method maintains an optimum exhaust fuel to air ratio in an internal combustion engine. A secondary air injection (SAI) pressure is measured in an SAI system. The SAI pressure measurement is converted into an SAI flow value. A fuel compe... | 09/26/2006 |
| 7107761 | Exhaust control apparatus of internal combustion engine and exhaust gas flow amount estimating method An exhaust control apparatus applied to an internal combustion engine in which intake sides of a plurality of cylinder groups are connected to a common intake passage and exhaust sides thereof are connected to different exhaust passages, comprises an exhaust gas flo... | 09/19/2006 |
| 7104050 | Control method for an exhaust gas purification system and an exhaust gas purification system A method and system providing a vehicle condition detection means (38C) for detecting the stopped and traveling state of a vehicle, and when the vehicle condition detection means (38C) detects that the vehicle has stopped during operation of an exhaust... | 09/12/2006 |
| 7100366 | Device for the post-treatment of exhaust gases of an internal combustion engine An apparatus for posttreatment of exhaust gases of an internal combustion engine, using a reducing agent to be introduced into the exhaust gases, in particular a urea or a urea-and-water solution, having an improved mixing chamber into which stored reducing agent, v... | 09/05/2006 |
