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Class 123/677 - Combined with ambient condition responsive means (e.g., pressure)


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter wherein the control means is also responsive
No. of patents: 61
Last issue date: 12/28/2010


1    
NumberTitleIssue Date
7856967Method of determining ambient pressure for fuel injection
A method of controlling a motor vehicle is disclosed. The method can be used to determine an ambient pressure value without the use of an ambient pressure sensor. The ambient pressure value can be used for controlling a set of fuel injectors. The method can include ...
12/28/2010
7597093Humidity based control system for an internal combustion engine
A humidity based control system for an internal combustion engine includes a calculation module and a calibration module. The calculation module determines a humidity of air used in a combustion process of the internal combustion engine. The control module selective...
10/06/2009
7398775Detection of a humidity sensor failure in an internal combustion engine
A system and method for utilizing a humidity sensor with an internal combustion engine of a vehicle is described. Specifically, information from the humidity sensor is used to adjust a desired air-fuel ratio to reduce engine misfire while improving vehicle fuel econ...
07/15/2008
7363911Humidity-based combustion control in a multiple combustion mode engine
A system and method for controlling operation of a gasoline internal combustion engine capable of running in a spark ignition mode and a homogeneous charge compression ignition mode. The method and system implementation include determining humidity of air to be draw...
04/29/2008
7360392Fluid sensor including an error detection device
A fluid sensor may be used for detecting fluid media, in particular hydrogen. The fluid sensor includes a sensor chip having a chip surface, which has a measuring surface and a body surface. Printed conductors of a central sensor circuit having at least one heating ...
04/22/2008
7347193Method and device for determining the mass flow rate passing through the air-bleed valve of an internal combustion engine tank
A device for determining the mass flow via a tank venting valve for an internal combustion engine including an intake manifold and a throttle valve, the intake manifold being connected to the tank venting valve and an exhaust gas recirculation system, one measuring ...
03/25/2008
7296562Control system and method for estimating turbocharger performance
A control system for estimating the performance of a compressor is disclosed. The control system has a compressor fluidly connected to an inlet manifold of a power source. The control system also has a power source speed sensor to provide an indication of a rotation...
11/20/2007
7287742Carburetor and method of manufacturing
A carburetor has an air intake passage, a fuel passage, a fuel nozzle in communication with the fuel passage and having an opening through which fuel flows, a first valve in communication with the air intake passage and being movable between first and second positio...
10/30/2007
7278394Air-fuel-ratio control apparatus for internal combustion engine
The air-fuel-ratio control apparatus for an internal combustion engine obtains an upstream-side feedback correction value DFi for feedback-controlling an air-fuel ratio on the basis of a value (Fcrlow(k−N)) that is obtained by performing a low-pass filter process ...
10/09/2007
7246604Engine control advantageously using humidity
A system and method for utilizing a humidity sensor with an internal combustion engine of a vehicle is described. Specifically, information from the humidity sensor is used to adjust a desired air-fuel ratio to reduce engine misfire while improving vehicle fuel econ...
07/24/2007
7223946Method and device for control and diagnosis for the heating of a lambda probe
A method for controlling and regulating an electrical heating of a probe situated in the exhaust system of an internal combustion engine, a total heating power of the probe being set, and an actual temperature value of the probe being determined by measuring a chara...
05/29/2007
7104228Engine with variable cam timing and control advantageously using humidity sensor
A system and method for utilizing a humidity sensor with an internal combustion engine of a vehicle is described. Specifically, information from the humidity sensor is used to adjust a desired air-fuel ratio to reduce engine misfire while improving vehicle fuel econ...
09/12/2006
7040287Fuel dosage device
The invention relates to a fuel metering device comprising a fuel chamber, a fuel inlet which can be opened and closed and leads to the fuel chamber, and at least one fuel outlet leading from the fuel chamber to a suction channel of an internal combustion engine. Pa...
05/09/2006
7025042Methods of operation for controlled temperature combustion engines using gasoline-like fuel, particularly multicylinder homogenous charge compression ignition (HCCI) engines
A multicylinder homogeneous charge compression ignition (HCCI) engine with a control system designed to maintain stable HCCI combustion during engine speed/load transitions by: (1) determining “combustion parameter” values such as the maximum rate of pressure ri...
04/11/2006
7004125Valve train system of internal combustion engine and control method thereof
A valve train system for operating an intake valve of an internal combustion engine, in which an operation amount of the intake valve is controlled. When it is determined that there is a need of improving a fuel efficiency by increasing the compression ratio within ...
02/28/2006
6925376System for diagnosing operation of a cooling system for an internal combustion engine
A system for diagnosing operation of a cooling system for an internal combustion engine includes a coolant temperature sensor producing a temperature signal corresponding to coolant fluid temperature, means for determining either an engine load or a throttle percent...
08/02/2005
6918362Engine with variable cam timing and control advantageously using humidity sensor
A system and method for utilizing a humidity sensor with an internal combustion engine of a vehicle is described. Specifically, information from the humidity sensor is used to adjust a desired air-fuel ratio to reduce engine misfire while improving vehicle fuel econ...
07/19/2005
6913003Direct injected engine control strategy
A method of operating a direct injected combustion engine having an exhaust system with a conventional three-way catalytic converter, the method including operating the engine with a stoichiometric air/fuel ratio at least substantially across the entire engine opera...
07/05/2005
6910460Engine air-fuel ration control method with venturi type fuel supply device and fuel control appliance including the method
An object of the present invention is to maintain stable air-fuel ratio on a venturi type fuel supply device, irrespective of the external load such as air-conditioner and electrical load, and to provide stable engine speed on idling state. A venturi type fue...
06/28/2005
6904899Air-fuel ratio controller for internal-combustion engine
An output signal from a downstream-side exhaust gas sensor is fed back into a fuel injection rate so that the air-fuel ratio of the exhaust gases flowing out from a catalyst may match a reference value. In this sub-feedback control process, the integral value of the...
06/14/2005
6886336Method for controlling condensate formation in an engine system
A method for controlling condensation in an engine. A set of signals indicative of an intake manifold temperature, intake manifold pressure, intake air temperature, intake air humidity, engine speed, and exhaust gas mask flow rate is provided. A critical value that ...
05/03/2005
6868327Device for estimating an amount of intake air of an internal combustion engine
A device for estimating the amount of intake air of an internal combustion engine comprising intake pipe pressure calculation means for calculating an intake pipe pressure, at this time, downstream of the throttle valve, and intake air amount calculation means for c...
03/15/2005
6863057Fuel vapor treatment system
A fuel vapor treatment system is provided that diagnoses failure of the purge valve using one absolute pressure sensor. The fuel vapor treatment system includes a fuel tank, a canister, a drain cut valve, a purge valve, purge piping and a sensor. The canister adsorb...
03/08/2005
6775623Real-time nitrogen oxides (NOx) estimation process
A process for providing a real-time estimation of in-cylinder NOx production rates during a combustion process in an internal combustion engine. The process employs a model that takes into account fundamental in-cylinder variables such as temperature, pressure and o...
08/10/2004
6725847Condensation protection AECD for an internal combustion engine employing cooled EGR
A system for protecting an internal combustion engine employing cooled recirculated exhaust gas (EGR) from excessive condensation includes an auxiliary emission control device (AECD) operable to determine when engine operating conditions correspond to a condensing c...
04/27/2004
6666191Control apparatus for internal combustion engine
Provided is a control apparatus for a fuel priority type internal combustion engine, including a means of directly or indirectly detecting a variation in air density, for correcting a maximum value of the desired fuel volume on a basis of a result of the ...
12/23/2003
6662795Method and apparatus configured to maintain a desired engine emissions level
The present invention is configured to maintain a desired emissions level of an engine having an intake manifold and an exhaust manifold, and an exhaust stack is disclosed. The method includes the steps of establishing a desired emissions level, establish...
12/16/2003
6591811Device for controlling an internal combustion engine
A device for controlling an internal combustion engine having an arrangement for recording operating parameters of the internal combustion engine, such as engine speed, load, and coolant temperature; an arrangement for providing a signal related to a desi...
07/15/2003
6116228Control for engine
A feed back control system and method for direct injected engines, particularly useful in marine applications to avoid excessive hunting due to the close proximity of the sensor to the fuel injector. Both injection initiation and duration are controlled u...
09/12/2000
5983874Air-fuel ratio control system for internal combustion engines
An air-fuel ratio control system for an internal combustion engine includes an air-fuel ratio sensor arranged in the exhaust system of the engine. An ECU estimates the air-fuel ratio of a mixture supplied to each of the cylinders cylinder by cylinder in r...
11/16/1999
5845627Internal combustion engine pneumatic state estimator
Pneumatic state estimation operations for estimating gas flow and pressure at pneumatic nodes and flow branches within a reticulated engine system for engine control and diagnostic operations resolves net flow imbalances at specific pneumatic nodes and at...
12/08/1998
5774822Fuel metering control system for internal combustion engine
A system for controlling fuel metering for a multi-cylinder internal combustion engine having a feedback loop which has an adaptive controller and an adaptation mechanism coupled to said adaptive controller for estimating controller parameters θ. The ada...
06/30/1998
5762055Air-to-fuel ratio control apparatus for an internal combustion engine
An air-to-fuel ratio control apparatus for an internal combustion engine includes an air-to-fuel ratio sensor of a current limiting type for detecting an air-to-fuel ratio of an air-fuel mixture from a condition of exhaust gas originating from the air-fue...
06/09/1998
5606959Fuel metering control system for internal combustion engine
A fuel metering control system for an internal combustion engine including a feedback loop having an adaptive controller and an adaptation mechanism that estimates controller parameters θ. The adaptive controller calculates a feedback correction coeffici...
03/04/1997
5580440Air fuel ratio sensory
A method and apparatus are disclosed for measuring atmospheric pressure in conjunction with an air-fuel ratio sensor of the type comprising a concentration cell with atmospheric air and exhaust electrodes on opposite sides of a solid-state electrolyte hav...
12/03/1996
5558072Apparatus for disposing of fuel-vapor
Fuel-vapor evaporating from a fuel tank is led though a vapor pipe and absorbed in a charcoal canister. Though the evaporating rate is influenced by the altitude where the automobile operates, the air-fuel ratio must be controlled within the proper range....
09/24/1996
5391284Arrangement for determining the lambda value of an air/fuel mixture
An arrangement determines a voltage which indicates the lambda value of an air/fuel mixture supplied to a combustion engine generating exhaust gas during the operation thereof. The arrangement includes a two-cell oxygen probe mounted in the exhaust gas fl...
02/21/1995
5072712Method and apparatus for setting a tank venting valve
A method is disclosed for obtaining output values for actuating a tank venting valve connected to the intake pipe of an internal combustion engine. A control factor is supplied by a lambda controller computing step and modifies a loading factor until a re...
12/17/1991
5067465Lean burn internal combustion engine
A lean burn internal combustion engine wherein a basic fuel amount is calculated from a map based on the intake pressure and the engine speed, and a lean correction factor, which is multiplied by the basic fuel amount, is calculated from a lean map based ...
11/26/1991
5016596Air-fuel ratio control method for internal combustion engines
A method of controlling the air-fuel ratio of an air-fuel mixture supplied to an internal combustion engine including the step of interrupting the feedback control of the air-fuel ratio responsive to a detected value of the concentration of an exhaust gas...
05/21/1991
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