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Class 123/703 - Exhaust gas composition sensor


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter wherein the transducer senses a constituent
No. of patents: 118
Last issue date: 02/14/2012


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NumberTitleIssue Date
8113187Delay compensation systems and methods
A steady-state (SS) delay module determines a SS delay period for SS operating conditions based on an air per cylinder. A dynamic compensation module determines a predicted delay period based on first and second dynamic compensation variables for dynamic operating c...
02/14/2012
7987840Delay compensated air/fuel control of an internal combustion engine of a vehicle
A fuel control approach that compensates for time delays to increase exhaust gas sensor feedback response speed. ...
08/02/2011
7367330Internal combustion engine controller
The internal combustion engine controller includes an oxygen concentration sensor outputting an electric signal having a value depending on an oxygen concentration in an exhaust gas flowing through an exhaust passage of an internal combustion engine, and a control u...
05/06/2008
7341694Ammonia sensor
In an ammonia sensor (1), lead portions (7) and (9) are provided on an insulating substrate (5); a pair of comb-shaped electrodes (11) and (13) are connected to the lead portions (7) and (9), respectively; a se...
03/11/2008
7328673Valve timing correction control apparatus and method for an internal combustion engine
A valve timing correction control apparatus for an internal combustion engine is provided. The engine includes a plurality of banks and variable valve operating mechanisms disposed at the respective banks for variably controlling valve timings of intake valves separ...
02/12/2008
7231290Method and apparatus for controlling a gas-emitting process and related devices
Disclosed herein is a method and apparatus for controlling a process, such as a chemical reaction, that emits a multi-component mixture of gases; and for controlling a device to which is transmitted a product of a chemical reaction that emits a multi-component mixtu...
06/12/2007
7182078System for assisting regenerating depollution means integrated in an exhaust system of an engine
A system for assisting regeneration of depollution included in an exhaust system of a motor vehicle engine by switching the engine between operation in lean mode and operation in rich mode, depending on various parameters for controlling the operation of the engine,...
02/27/2007
7168423Gas sensor units for engines
In a multipurpose engine with a reduced or limited displacement adapted for use in a portable work machine or the like, the engine includes a detecting element of a gas sensor for controlling an air-fuel ratio. Damage or degradation of the detecting element due to v...
01/30/2007
7140360System for controlling exhaust emissions produced by an internal combustion engine
A system for controlling the air-to-fuel ratio in an internal combustion engine includes an air intake conduit coupled to an intake manifold, an EGR valve disposed in-line with an EGR conduit responsive to a valve control signal, a lambda sensor producing a lambda s...
11/28/2006
7134429Method and device for controlling an internal combustion engine
A device and a method for controlling an internal combustion engine in which, starting from the comparison between a measured and an expected value for a lambda signal, a correction value is specified for a fuel signal characterizing the fuel quantity, or an air sig...
11/14/2006
7089922Apparatus, system, and method for minimizing NOin exhaust gasses
An apparatus, system, and method are disclosed for minimizing NOx in exhaust gasses. The apparatus includes an ionization module configured to at least partially ionize an exhaust gas of an engine. A characterization module is configured to identify NO
08/15/2006
7007685Air-fuel ratio control device of internal combustion engine
An air-fuel ratio control apparatus for controlling an air-fuel ratio of a supplied air-fuel mixture of an internal combustion engine to a target air-fuel ratio by a feedback control in accordance with an output signal of an oxygen concentration sensor provided at a...
03/07/2006
6928980Control device for spark-ignition engine
A control device switches an engine between normal operation mode and special operation mode. In the normal operation mode, an independent cylinder configuration is formed to produce combustion independently in individual cylinders. In the special operation mode, a ...
08/16/2005
6848438Internal combustion engine exhaust device and method for making same
An internal combustion engine exhaust device. The device includes a conduit element through which exhaust gases flow. The conduit element includes a housing for mounting a measurement sensor such as an oxygen probe. The housing is formed by a hole extended by an ins...
02/01/2005
6828156Evaluating method for NOx eliminating catalyst, an evaluating apparatus therefor, and an efficiency controlling method therefor
In order to prevent a catalyst for an internal combustion engine from decreasing efficiency by deterioration after long time use of the catalyst, the decreased efficiency of the catalyst is determined, and the internal engine is controlled based on results of the de...
12/07/2004
6722436Apparatus and method for operating an internal combustion engine to reduce free oxygen contained within engine exhaust gas
A method and apparatus for controlling the operation of an internal combustion engine to reduce the presence of free oxygen in the exhaust gas of the engine. The method and apparatus provides for the internal combustion engine to be operated with a fuel-to-air ratio...
04/20/2004
6712053Control system for internal combustion engine
An O2 amount in the intake air is determined based on a fresh air and an EGR gas. A consumed O2 amount is determined with a command injection amount Qr. Then, the consumed O2 amount is subtracted from the O2 amount in the ...
03/30/2004
6609510Device and method for controlling air-fuel ratio of internal combustion engine
An intake air quantity detected by an air flow meter is corrected based on a change speed of an engine load and on a change speed of an engine rotation speed, and an oxygen quantity stored in a catalytic converter is estimated based on the corrected intak...
08/26/2003
6598596Solid state potentiometric gaseous oxide sensor
A solid state electrochemical cell (10a) for measuring the concentration of a component of a gas mixture (12) includes first semiconductor electrode (14) and second semiconductor electrode (16) formed from first and second semiconductor materials, respect...
07/29/2003
6561166Purge fuel canister measurement method and system
An engine controller system for a direct injection spark ignited internal combustion engine that is capable of operating a stratified mode where fuel is injected during a compression stroke of the engine and a homogeneous mode where fuels is injected duri...
05/13/2003
6484709Valve arrangement for combustion sensor
An arrangement for utilizing a combustion sensor with an internal combustion engine. The arrangement includes a sensor mounted to the outside of an engine cylinder for communication with exhaust gasses within the cylinder via a sampling passage. A mountin...
11/26/2002
6463912Intake air volume detection device for internal combustion engine
An apparatus for accurately detecting the amount of engine intake air based on the amount of air flowing past an air flow meter in an internal combustion engine equipped with a variable intake air control mechanism capable of varying the operating conditi...
10/15/2002
6325046Engine control system
An internal combustion engine includes an improved feedback control system and method for operating the engine to provide the desired air/fuel ratio under all running conditions without causing unsettling variations in engine speed and torque as adjustmen...
12/04/2001
6301888Low emission, diesel-cycle engine
A diesel-cycle engine with a unique exhaust gas recirculation system includes a plurality of cylinders with fuel feed for each of the cylinders and an intake manifold for distributing intake air to each of the cylinders for combustion of the fuel charges ...
10/16/2001
6227033Auto-calibration method for a wide range exhaust gas oxygen sensor
An improved fuel control in which the transfer function of a wide-range exhaust gas oxygen sensor is automatically and periodically learned or re-learned in the course of vehicle operation. The oxygen sensor is calibrated at two different operating condit...
05/08/2001
6192738Method and arrangement for analyzing exhaust gas from an internal combustion engine
In order to provide a method and arrangement for analytical determination of the relative amounts of exhaust gas components, except for water, but including hydrogen in the rich range or oxygen in the lean range, and for determining a λ value, in which t...
02/27/2001
6135100Sensor arrangement for engine control system
A number of embodiments of feedback control systems for two-cycle, internal combustion engine management systems. Each embodiment employs an exhaust system sensor which senses the exhaust gases by drawing exhaust gases from the exhaust of the engine. In s...
10/24/2000
6105366Method for monitoring the emission control system of a spark ignition internal combustion engine
An emission control system is monitored by measuring time periods during which the signal of a post-catalyst lambda probe lies below or above an engine speed/load dependent threshold value. The measurements are weighted with an engine speed/load dependent...
08/22/2000
6068530Oxygen sensor arrangement for watercraft
A marine engine is constructed having an improved component layout so as to reduce the risk of water contact with an oxygen sensor of the engine. This advantage is accomplished by providing a collection chamber that promotes drainage of any water that may...
05/30/2000
6055810Feedback control of direct injected engines by use of a smoke sensor
A fuel control system for an engine utilizing direct fuel injection including a smoke sensor for measuring the level of smoke in the engine exhaust. A control module, in response to the output signal from the smoke sensor, regulates the timing and deliver...
05/02/2000
5979423Fiber-optic gas composition sensor for exhaust gases
An on-board gas composition sensor is disclosed for monitoring oxygen content levels in the exhaust gas (24) of an internal combustion engine (4). The gas composition sensor includes a sensor body (20) mounted inan exhaust stream from an engine (4), with ...
11/09/1999
5954040Method and arrangement for controlling an internal combustion engine of a vehicle
The invention is directed to a method for controlling an internal combustion engine of a vehicle utilizing a control unit which detects operating data of the engine. The control unit includes a computing unit for processing the operating data and the cont...
09/21/1999
5875768Method and arrangement for determining the sensitivity of a hydrocarbon sensor for an internal combustion engine
The invention is directed to a method of determining the sensitivity of a hydrocarbon sensor for an internal combustion engine generating exhaust gas during the operation thereof. The hydrocarbon sensor includes a probe electrode subjected to the exhaust ...
03/02/1999
5869743Method and apparatus for analyzing catalyst and other systems operations
A method of analyzing exhaust gas emissions from an internal combustion engine is modified by the provision of a data process or connected to an exhaust gas analyzer and adapted to monitor changes in exhaust gas concentrations and to identify changes indi...
02/09/1999
5857163Adaptive engine control responsive to catalyst deterioration estimation
Control of operation of an internal combustion engine is responsive to an estimate of catalyst deterioration in an engine exhaust gas catalytic treatment device, including ignition timing control, intake air control, and supplemental catalyst heating cont...
01/05/1999
5836155Sensor arrangement for engine control system
A number of embodiments of feedback control systems for two-cycle, internal combustion engine management systems. Each embodiment employs an exhaust system sensor which senses the exhaust gases by drawing exhaust gases from the exhaust of the engine. In s...
11/17/1998
5837114Arrangement for determining the concentration of a component in a gas mixture
An arrangement for determining the concentration of a component in a gas mixture includes a first volume in which the concentration of the component is maintained constant with respect to the influence of the coupling to the concentration in the gas mixtu...
11/17/1998
5767386Exhaust gas sensor and circuit configuration for the exhaust gas sensor
An exhaust gas sensor has first and second sensor elements. Exhaust gas surroundings of the first sensor element are catalytically activated, so that an oxygen partial pressure which is in equilibrium will always be measured by the first sensor element, r...
06/16/1998
5753794Internal combustion engine having oxygen sensor with reference criterion calibration
An internal combustion engine has an engine unit with an exhaust pipe comprising an oxygen sensor an electrical resistance heater in a bridge circuit having a control resistance and two fixed resistances RA and RB. For calibration the cell is initially op...
05/19/1998
5711148Sensor arrangement for engine control system
A number of embodiments of feedback control systems for two-cycle, internal combustion engine management systems. Each embodiment employs an exhaust system sensor which senses the exhaust gases by drawing exhaust gases from the exhaust of the engine. In s...
01/27/1998
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