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| Number | Title | Issue Date |
| 8136347 | Algorithm to diagnose leaks or blockages downstream of the secondary air injection reaction (SAIR) pressure sensor A control module and method for an exhaust system of an engine can include a secondary air intake (SAI) pressure module that monitors SAI pressure. An accumulation module can accumulate an SAI string length based on the monitored SAI pressure. A calculation module c... | 03/20/2012 |
| 8087237 | Secondary-air supply system for internal combustion engine A secondary-air supply system for an internal combustion engine, including a catalyst provided in an exhaust passage and configured to purify exhaust gas from the engine, and a secondary-air supply source and a secondary-air valve provided in a secondary-air passage... | 01/03/2012 |
| 8015804 | Secondary air supply apparatus and control method for the same An ECU executes (300) a program including a step (S202) of opening an electromagnetic ASV (232) while a vacuum pressure ASV (1) and a vacuum pressure ASV (2) are controlled so as to be closed, and an air pump (200) is contro... | 09/13/2011 |
| 7958722 | Valve device and secondary air supply system having the same A valve device includes a control valve for manipulating a communication between a first fluid channel and a second fluid channel. The valve device further includes a pressure sensor for detecting pressure in the first fluid channel. The pressure sensor is provided ... | 06/14/2011 |
| 7913488 | Internal combustion engine with secondary air injection system A method for operating a diesel internal combustion engine having a compressed air source, a diesel particulate filter situated in the exhaust gas system, and a secondary air line and secondary air compressor for introducing secondary air into the exhaust gas system... | 03/29/2011 |
| 7900442 | Engine including secondary air supply apparatus The present invention provides an engine including a secondary air supply apparatus for supplying a secondary air to an exhaust gas passage in a cylinder head. The engine comprises a secondary air passage of the secondary air supply apparatus which extends from an o... | 03/08/2011 |
| 7775038 | Second air flow control apparatus A second air flow control apparatus disposed between an air inlet port of an engine and an exhaust port includes a body, a base, a moving member, and a gas thread. The body has a cavity, an air inlet and an air outlet, the air inlet and the air outlet being connecte... | 08/17/2010 |
| 7757479 | Secondary air supply system for an exhaust port of an engine A secondary air supply system in which individual members may be arranged to be disposed on substantially the same straight line in an engine, whereby connection path lengths are reduced and the attachment thereof is facilitated. The secondary air supply system may ... | 07/20/2010 |
| 7757480 | Air-fuel ratio control apparatus of internal combustion engine An air-fuel ratio control apparatus of an internal combustion engine includes: an exhaust gas purifying catalyst disposed in an exhaust passage of the internal combustion engine; fuel cutting means for cutting fuel to be supplied to the internal combustion engine at... | 07/20/2010 |
| 7716919 | Control device and control method for internal combustion engine When starting an internal combustion engine from cold, after-burning of unburned HC in the exhaust gas within an exhaust passage is promoted by supplying secondary air into the exhaust passage upstream of a catalyst. At this time, the pressure within the exhaust pas... | 05/18/2010 |
| 7673447 | Exhaust system for an internal combustion engine and a respective operating method The present invention relates to an exhaust system for an internal combustion engine, in particular in a motor vehicle, with an exhaust line in which an oxidation catalyst is provided for treatment of the exhaust gases coming from the internal combustion engine. To ... | 03/09/2010 |
| 7640729 | Method for operating a particulate filter situated in the exhaust gas area of an internal combustion engine and device for carrying out the method A method for operating a particulate filter situated in an exhaust gas area of an internal combustion engine and a device for carrying out the method are described. A measure of the particulate matter burn-off rate is detected for influencing and/or monitoring the p... | 01/05/2010 |
| 7607293 | Intake manifold pressure control apparatus and method for a hybrid propulsion system Provided is an intake manifold pressure control apparatus, or vacuum pump, for a hybrid propulsion system. The vacuum pump is operable to evacuate the intake manifold of an internal combustion engine, thereby lowering the Manifold Absolute Pressure, or MAP, to a pre... | 10/27/2009 |
| 7543444 | Air supply apparatus There is provided an air supply apparatus for an engine comprising a plurality of exhaust pipes and catalysts arranged in the exhaust pipes, respectively, the apparatus comprising devices for supplying air into the interior of the corresponding exhaust pipes upstrea... | 06/09/2009 |
| 7520125 | Method for controlling the amount of secondary air A method for controlling the amount of secondary air of a motor vehicle, which has a device for injecting secondary air. The increase in the injected amount of secondary air is carried out as a function of the starting conditions of the motor vehicle and the heating... | 04/21/2009 |
| 7516611 | Secondary air injection system for an internal combustion engine The present invention relates to a secondary air injection system for an internal combustion engine, and an automotive vehicle comprising such a secondary air injection system. The arrangement includes shut-off valve for selectively passing on or restricting airflow... | 04/14/2009 |
| 7513107 | Air supply device for an internal combustion engine In a secondary air supply device comprising a turbine and a compressor with turbine and compressor wheels having blades which are covered by wheel covers and an air filter structure disposed between the turbine and compressor wheels, so that air is supplied to the c... | 04/07/2009 |
| 7487632 | Method of calculating airflow introduction into an automotive exhaust air injection system Injection of secondary air into an exhaust of an automotive vehicle at a location upstream of a catalytic converter of the vehicle in which the airflow rate is calculated by the air injection system pressure and by the pulsation of the air injection system pressure ... | 02/10/2009 |
| 7487633 | Device for exhaust gas purification for spark-ignited engines The exhaust gas purification device has a first chamber having an exhaust pipe inlet, an ambient air inlet, and an exhaust gas outlet. A Venturi is arranged within the chamber, having an inlet end communicating with an ambient air inlet, a throat, and an outlet end ... | 02/10/2009 |
| 7454899 | Secondary air supply system for internal combustion engine A secondary air supply system for an internal combustion engine includes: a cylinder head of the internal combustion engine having a plurality of exhaust holes and a plurality of supply holes formed thereon; a supply path communicating the exhaust holes and the supp... | 11/25/2008 |
| 7404290 | Exhaust system for an internal combustion engine The present invention relates to an exhaust system for an internal combustion engine, having an exhaust line for removing exhaust gas from the internal combustion engine and having a secondary fuel supply for introducing secondary fuel into the exhaust gas of the in... | 07/29/2008 |
| 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 |
| 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 |
| 7367182 | Exhaust emission control device for an internal combustion engine A forced regeneration device which performs regeneration of a particulate filter includes oxidation catalysts (23, 24a) disposed upstream from the particulate filter or in said particulate filter and a burner (30) located upstream from the oxida... | 05/06/2008 |
| 7356987 | Exhaust gas recirculation system having an electrostatic precipitator An exhaust gas recirculation system for a power source, has at least one inlet port configured to receive at least a portion of a flow of exhaust produced by the power source. The exhaust gas recirculation system also has an electrode disposed upstream of the at lea... | 04/15/2008 |
| 7314044 | Marine emissions control A marine engine has an exhaust system including a catalyst cooled by a flow of coolant, a coolant injector that injects coolant into the flow of exhaust at a point downstream of the catalyst, and a sensor arranged to sense a characteristic of the flow of exhaust, su... | 01/01/2008 |
| 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 |
| 7293406 | 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 ... | 11/13/2007 |
| 7293410 | Internal combustion engine having an exhaust particulate filter A control unit prevents overheating of a particulate filter in an exhaust path of an internal combustion engine during regeneration of the particulate filter if the regeneration deviates from prescribed conditions. Overheating is prevented using one of two engine op... | 11/13/2007 |
| 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 |
| 7284530 | Leak detector for fuel vapor purge system A suction pump introduces negative pressure into a reference-pressure-detecting portion. A driving voltage V of the suction pump is adjusted in such a manner that pressure Pr in the reference-pressure-detecting portion is within a target pressure range. When the pre... | 10/23/2007 |
| 7275364 | Exhaust emission control device of internal combustion engine The air/fuel ratio of exhaust flowing into a catalytic converter is forcibly modulated, between a lean air/fuel ratio leaner than a target average air/fuel ratio and a rich air/fuel ratio richer than the target average air/fuel ratio, with a specific period, a speci... | 10/02/2007 |
| 7266440 | Air/fuel ratio control system for automotive vehicle using feedback control An simplified structure of an air-fuel ratio control system for an internal combustion engine includes an upstream and a downstream catalytic device installed in an exhaust pipe of the engine and a first, a second, and a third air-fuel ratio sensor installed in upst... | 09/04/2007 |
| 7263826 | Muffler device with catalysts for improving purifying exhaust gas of nitrogen oxides within a motorcycle exhaust pipe A muffler device with catalysts for improving purifying exhaust gas of nitrogen oxides within a motorcycle exhaust pipe comprises a muffler divided into three chambers, a first chamber, a second chamber, and a third chamber; a front exhaust pipe; a front reduction c... | 09/04/2007 |
| 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 |
| 7260929 | Secondary air deliver device for an internal combustion engine In a secondary air delivery device for an internal combustion engine comprising a secondary air charger with a compressor and a turbine which is driven by the vacuum generated in the engine intake duct and which drives the compressor that delivers secondary air to t... | 08/28/2007 |
| 7254948 | Boost wastegate device for EGR assist An apparatus and method for controlling exhaust gas recirculation flow. The apparatus and method uses a pressure-bleeding device, such as a wastegate valve, to change the pressure in an internal combustion engine in order to alter the flow rate of the exhaust gas th... | 08/14/2007 |
| 7243488 | Method and apparatus for controlling regeneration temperature in a diesel particulate trap A diesel exhaust gas system includes a diesel particulate filter (DPF), a trap for nitrogen oxides (LNT), a hydrocarbon catalytic reformer for generating reformate, and an air supply. A method for controlling the rate of burn of soot in a DPF limits the oxygen perce... | 07/17/2007 |
| RE39720 | Catalytic reduction of emissions from internal combustion engines An apparatus for treating an exhaust gas stream from cold startup through continuous operating conditions of an internal combustion engine includes an oxidizing catalyst bed disposed in an exhaust pipe and a reducing catalyst bed disposed in the exhaust pipe downstr... | 07/10/2007 |
| 7231760 | Internal combustion engine with exhaust-gas turbocharger and secondary air injection The invention relates to an internal combustion engine which has charge-air supercharging by means of an exhaust-gas turbocharger and secondary air injection, the flow path of which is selected in such a way that the quantity of secondary air injected has an influen... | 06/19/2007 |
