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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 8056324 | Regeneration system An regeneration system for use in a power system is disclosed. The regeneration system may include a source of intake air, an engine brake configured to reduce the speed of an engine by compression and release of the intake air, and a valve configured to divert a po... | 11/15/2011 |
| 7367184 | Fuel injection control device for internal combustion engine A fuel injection amount control device is used for an internal combustion engine. A secondary air supply device supplies secondary air into an exhaust passage of the internal combustion engine. Flow amount calculating circuitry calculates a secondary air flow amount... | 05/06/2008 |
| 7364010 | Exhaust system for a motorcycle, and motorcycle including same A motorcycle, having both left and right mufflers, has an exhaust structure which enables an increase in the allowable margin through which the rear wheel is permitted to rise. A main exhaust pipe extends from an engine to one side of a shock absorber disposed on th... | 04/29/2008 |
| 7350349 | Method and device of a particle filter for an exhaust system, silencer including such a device, and a combustion engine driven vehicle Method and device for a particle filter for an exhaust system for a combustion engine, wherein the filter is regenerated by spontaneous combustion of particles accumulated in the filter. Exhaust gases from the combustion engine are led, during operation, past the fi... | 04/01/2008 |
| 7347045 | Motorcycle dynamic exhaust system The present invention provides a method of operating a dynamic exhaust system of a motorcycle engine. The method includes providing a valve in the exhaust system that is movable to direct exhaust gases between a first flow path through the exhaust system and a secon... | 03/25/2008 |
| 7313912 | Secondary air supply system for internal combustion engine A secondary air pipe is connected to an exhaust pipe upstream of a catalyst, and a secondary air pump is connected to an upstream portion of the secondary air pipe. An ECU determines an operating period of the secondary air pump before the secondary air pump is oper... | 01/01/2008 |
| 7311005 | Method and device for continuous measuring of dynamic fluid consumption, including pressure regulator In a method for continuous measuring of dynamic fluid consumption, particularly fuel, the pressure beyond the flow sensor is adjusted to a constant value by means of a pressure regulator by using a continuously-operating flow sensor with variable pressure drop, pref... | 12/25/2007 |
| 7284369 | Secondary air supply system and fuel injection amount control apparatus using the same A secondary air pipe is connected on the upstream side from catalyst in an exhaust pipe, and a secondary air pump is provided at an upstream portion of the secondary air pipe. An opening/closing valve for opening/closing the secondary air pipe is provided on the dow... | 10/23/2007 |
| 7261086 | Fast warm-up of diesel aftertreatment system during cold start Intake air is severely restricted during cold start of a diesel engine to provide high engine-out exhaust gas temperatures and quickly heat exhaust treatment devices. Cylinder pressures are maintained substantially below the pressure of the ambient atmosphere during... | 08/28/2007 |
| 7260928 | Diagnostic device for secondary air supply system A secondary air control system supplies secondary air to the upstream of a catalyst purifying exhaust gas in an exhaust passage of an engine. A diagnostic device includes a secondary air detecting means that detects a secondary air information related to pressure of... | 08/28/2007 |
| 7254478 | Method of estimating airflow in an air injection reaction system A method of estimating the quantity of secondary reaction airflow supplied to the exhaust manifold of an internal combustion engine by an air injection reaction (AIR) system models airflows in an AIR pump, an AIR valve, and a plenum coupling the pump to the valve. T... | 08/07/2007 |
| 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 |
| 7222483 | Device for supplying secondary air There is provided a device for supplying secondary air, which comprises a secondary air passage for supplying secondary air, to an exhaust passage of an engine, upstream of an exhaust purification device provided in the exhaust passage, a pump provided in the second... | 05/29/2007 |
| 7213396 | Method and device for operating an internal combustion engine A method for operating an internal combustion engine by introducing air, in which the air is conducted into the induction region of the internal combustion engine following shutoff of the internal combustion engine. If necessary, the intake valves and the exhaust va... | 05/08/2007 |
| 7197869 | Secondary air supplying structure of internal combustion engine In a secondary air supplying structure of an internal combustion engine, extending portions protruding upward are arranged in the number corresponding to the number of cylinders. Extending portions are each provided with a secondary air distribution path. To a surfa... | 04/03/2007 |
| 7185487 | Adaptive engine control for low emission vehicle starting A method for rapidly heating an emission control device in an engine exhaust uses excess air added to the exhaust via an air introduction device. After an engine cold start, the engine is operated to raise exhaust manifold temperature to a first predetermined value ... | 03/06/2007 |
| 7162865 | Method and arrangement for controlling a drive unit having an internal combustion engine The invention relates to a method and an arrangement for controlling a drive unit (1), especially of a vehicle, having a combustion engine (5). The method and arrangement make possible a correct charge control when utilizing a secondary air charger ( | 01/16/2007 |
| 7162861 | Method of improving performance of emission control devices by controlling exhaust oxygen content A method of providing extra air to the exhaust stream of an internal combustion engine. A small flow of air is diverted from the output of an air-charging device, such as a turbocharger, to an entry point upstream of an emission control device. The air is supplied i... | 01/16/2007 |
| 7152393 | Arrangement for utilizing the throttle energy of an internal combustion engine In an arrangement for reducing exhaust emissions and utilizing the throttling energy of an internal combustion engine, a compressor and a generator are operatively connected to a turbine by which the intake air flow is controlled while transferring the throttling en... | 12/26/2006 |
| 7150146 | Method of operating an exhaust gas treatment system for an internal combustion engine An exhaust gas treatment system for an internal combustion engine, particularly a diesel internal combustion engine having a catalyst arrangement and also at least one evaporator/burner arrangement upstream of the catalyst arrangement in the exhaust gas flow path, t... | 12/19/2006 |
| 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 |
| 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 |
| 7137305 | Stability-enhancing admixture and improved base stabilization process for use in roadway construction and reconstruction The present invention provides a process for stabilizing the base course of a roadway through steps including admixing an asphalt emulsion and Portland cement with granulated base materials. The base course formed through this process is stronger and less permeable ... | 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 |
| 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 |
| 7100368 | Drive device for a secondary air injection system In a secondary air injection system, MOSFETs control supply of electric current to an air pump and to a motor for driving an electromagnetic valve and to an electromagnetic coil to introduce secondary air into an exhaust gas passage upstream of a catalyst for purify... | 09/05/2006 |
| 7103466 | Method and an apparatus for predicting intake manifold pressure of an internal-combustion engine A method and an apparatus for predicting intake manifold pressure are presented, to compensate for a large lag or a large time delay without producing an overshot or discontinuous behaviors of a predicted value. The method comprises the step of obtaining a differenc... | 09/05/2006 |
| 7093430 | Method and device for implementing a method for ascertaining the load condition of a component arranged in an exhaust-gas region of an internal combustion engine A method and a device for implementing a method for ascertaining the load condition with an exhaust-gas component of a component arranged in an exhaust-gas region of an internal combustion engine is provided in which an increase in the exhaust-mass flow of the inter... | 08/22/2006 |
| 7036335 | Pneumatically actuated multi-way valve and refrigerating machine with multi-way valve A multi-way valve, in particular for use in the refrigerant circuit of a refrigeration unit, includes a housing with several inlets and outlets and a chamber with several seats that are respectively allocated to one inlet or outlet. A closing member is allocated to ... | 05/02/2006 |
| 7032375 | Secondary air supply system In the disclosed secondary air supply system, an on-off valve (13) is driven by the discharge pressure of an air pump (12). A diaphragm chamber (44) is arranged in the neighborhood of a discharge outlet (54), and a part of the discharge a... | 04/25/2006 |
| 7032376 | Diesel fuel burner for diesel emissions control system A burner for use in the emissions system of a lean burn internal combustion engine. The burner has a special burner head that enhances atomization of the burner fuel. Its combustion chamber is designed to be submersed in the engine exhaust line so that engine exhaus... | 04/25/2006 |
| 7024852 | Multi-purpose valve In an electrical multi-purpose valve for supplying secondary air into an exhaust system of an internal combustion engine, in which a power-actuated closing member controls a valve orifice in a passage between an inlet from an air supply line and an outlet to the exh... | 04/11/2006 |
| 7010908 | Anomaly judgment apparatus for secondary air supply system An anomaly judgment apparatus for a secondary air supply system which includes a secondary air supply path for introducing secondary air into an exhaust path of an internal combustion engine and an open-close valve disposed in the secondary air supply path. The valv... | 03/14/2006 |
| 6983590 | Secondary air injection diagnostic system using pressure feedback A diagnostic system according to the present invention diagnoses system failure of a secondary air injection system. The secondary air injection system includes a pump that provides air to an exhaust system via a conduit and a valve that controls the flow of air thr... | 01/10/2006 |
| 6978605 | Exhaust emission control system for engine In an exhaust emission control system for an engine, comprising an exhaust emission control catalyst disposed in an exhaust muffler whose inside is divided into a plurality of chambers, at least a portion of the inside of the exhaust muffler is divided into a first ... | 12/27/2005 |
| 6962047 | Engine intake A/F ratio control system in outboard engine system In an engine intake A/F ratio control system in an outboard engine system, a secondary air passage (P) for supplying secondary air for regulating the A/F ratio of an air-fuel mixture is connected to a carburetor (33) in an intake system of an engine (E), and ... | 11/08/2005 |
| 6945035 | Auxiliary air supplying system, and control methods and failure diagnostic methods thereof When the determination result of failure determination at a start of AI (auxiliary air injection=supply) is that there is a possibility of a closing anomaly due to freezing, a reevaluation process 1 being a reevaluation after a warm-up is performed. When the ... | 09/20/2005 |
| 6938729 | Exhaust gas system An exhaust gas system for an internal combustion engine, in particular, of a motor vehicle has two mufflers through which the exhaust gas is able to flow in a parallel fashion. A switching unit makes it possible to selectively convey the exhaust gas flow of the inte... | 09/06/2005 |
| 6918245 | Secondary air feeding apparatus and method of detecting abnormality in the apparatus The invention relates to a secondary air feeding apparatus and a method of detecting an abnormality in the apparatus capable of making a precise determination on abnormalities in components and detecting operational failures as well. According to one aspect of the i... | 07/19/2005 |
