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7536983 |
Internal combustion engine and method for operating an internal combustion engine
An internal combustion engine has a cylinder with a combustion chamber delimited by a reciprocating piston that drives a crankshaft rotatably supported in a crankcase. The internal combustion...
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7380448 |
Malfunction detection apparatus for pressure sensor
A malfunction detection apparatus is disclosed for a forced induction system. The system includes a compressor provided on an upstream side of a throttle valve in an intake passage of an engine, an...
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7302834 |
Method for supplying an internal combustion engine with conditioned combustion gas, device for carrying out said method, method for determining the quantities of pollutants in the exhaust gases of an internal combustion engine, and device for carrying out said method
A method and apparatus for determining the quantities of pollutants in the exhaust gases of internal combustion engines wherein an essentially constant and fully conditioned quantity of humidity...
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7299701 |
Compressive fatigue and energy test apparatus and method for testing clutch plate friction materials
The present invention presents a means for simultaneously testing the compressive strength and measuring the thermal energy dissipated by a given friction material during slip. The testing...
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7263425 |
Method and device for operating an internal combustion engine
In a method and device for operating an internal combustion engine having an adjustable component through which a gas flows and by whose setting the gas flowing through the component is influenced,...
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7225793 |
Engine timing control with intake air pressure sensor
An engine control apparatus is disclosed for determining crankshaft position and engine phase of an internal combustion engine through monitoring intake air pressure fluctuations. The opening of...
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7205781 |
Mass air flow circuit having pulse width modulation feedback control
A circuit for measuring the mass air flow rate through a duct is disclosed. The circuit includes a bridge circuit, a first amplifier, an oscillator, a comparator and a switch. The bridge circuit...
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7201047 |
Air flow measuring device
The present invention provides an air flow measuring device comprising a housing with a sub-passage having a inlet and a outlet for air flow formed in the housing, the sub-passage further having a...
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7188612 |
Control system for internal combustion engine
An engine control system ( 1 ) measures an amount of air sucked by an engine ( 2 ) based on the output of an air flow meter ( 14 ) provided in an air intake passage ( 4 ), on the downstream side of...
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7178388 |
Intake air flow detecting device for internal combustion engine
An intake air flow detecting device is provided to an intake air passage, through which intake air flows into an internal combustion engine. Intake air flow is divided into a main passage and a...
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7139656 |
Mass airflow rate per cylinder estimation without volumetric efficiency map
A method of dynamically determining a mass airflow per cylinder in order to control operation of an internal combustion engine includes first initializing a mass airflow per cylinder (MAC) value. A...
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7096723 |
Method and device for determining the throughput of a flowing medium
Methods and/or devices for detecting the flow rate of a flowing medium, in particular the flow rate of a flowing air mass, are described, in which the flowing medium is detected with two evaluation...
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7059183 |
Air flow measuring device
The present invention provides an air flow measuring device comprising a housing with a sub-passage having an inlet and an outlet for air flow formed in the housing, the sub-passage further having...
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7047939 |
Control circuit module, intake air passage body, engine electronic control device, and engine air intake system provided with the same
An engine electronic control unit is inserted through a through hole provided in an intake pipe and mounted in an intake air passage in a direction substantially perpendicularly with respect to a...
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7010423 |
Method for operating an internal combustion engine
A method and a control unit for operating an internal combustion engine of a motor vehicle are provided, in particular for controlling/regulating the internal combustion engine as a function of an...
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6978667 |
Intake air amount detecting apparatus for engine and method thereof
Detection signals from an airflow meter, which outputs different detection signals for the forward flow and reverse flow of the intake air of an engine, are converted into intake air amount data of...
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6915682 |
Device for determining at least one parameter of a medium flowing in a conduit
A device for determining a parameter of a medium flowing in a line, according to the related art, does not offer sufficient protection for a measuring element from liquid or solid particles which...
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6904793 |
Air flow meter
An air flow meter which can decrease the error due to the backflow. Throttle valve 17 which opens and shuts the air intake passage is installed in the air intake passage of the internal...
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6868722 |
Air flow rate measuring apparatus
A diversion passage is constructed into an inverted U shape in which an upstream diversion passage and a downstream diversion passage each having a passage direction in a direction of projection of...
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6860149 |
Mass airflow measuring apparatus
To offer a mass airflow measuring apparatus in which the effect of the adhesion onto the heating resistor caused while the engine is off is reduced and the measuring accuracy is improved. The...
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6810859 |
Control system of internal combustion engine with output correcting means of thermal type air flow sensor
Disclosed here is a control unit employed for an internal combustion engine and provided with air flow sensor output correcting element capable of correcting a detected voltage error to occur in...
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6779393 |
Device for measuring the mass of a flowing medium in an intake tube
A device for measuring the mass of a flowing medium with a temperature-dependent measurement element has a measurement conduit whose faces, which extend perpendicular to a surface fixed by the...
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6756571 |
System and method for compensation of contamination of a heated element in a heated element gas flow sensor
A system for compensation of contamination of a heated element in a heated element gas flow system in which the heated element becomes heated from an ambient temperature to an elevated temperature...
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6728624 |
Method for estimating the filling of a cylinder in an internal combustion engine
Method for estimating the filling of a cylinder in an internal combustion engine provided with cam stroke variation system. A theoretical induction efficiency which the cylinder would have if it...
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6672146 |
Thermal resistor type air flow measuring apparatus
To correct properly the error of the thermal resistor type air flow measuring apparatus caused by the pulsation in the intake pipe in detecting the air flow of the internal combustion engine, a...
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6662640 |
Air amount detector for internal combustion engine
A response delay compensation element for compensating a response delay of an output g MAF of an airflow meter by a phase advance compensation is provided so that an output g of the response delay...
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6644104 |
Intake air-flow rate detecting apparatus and detecting method of internal combustion engine
An intake air-flow rate detecting apparatus of an internal combustion engine according to the present invention has a thermal air-flow sensor for detecting an intake air-flow rate of the internal...
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6644850 |
Temperature sensing device for an internal-combustion engine
A temperature sensing device for an internal-combustion engine includes a carrier structure, a first sensor element accommodated on the carrier structure, a second sensor element also accommodated...
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6588261 |
Method for determining the air entering the cylinders of an internal combustion engine having a supercharger
A device for determining air entering cylinders of an internal combustion engine having a supercharger. The air is determined as a function of such quantities as rpm, air throughput in the intake...
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6588257 |
Method for checking the plausibility of the measured load in an internal combustion engine having variable valve lift control
The plausibility check takes place in such a way that a first piece of load information is derived as a function of the throttle valve position and a differential pressure determined from the...
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6584834 |
Method for detecting combustion misses
A method for detecting combustion misfires for internal combustion engines is introduced wherein an index for the rough running of the engine is formed and is compared to a threshold value. The...
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6578414 |
Split-flow-type flowmeter
A split-flow-type flowmeter in which an end portion of a flow splitter tube 1 is inserted into a main-flow pipe 10 having a diameter D. A flow splitter tube 1 includes a U-shaped split-flow...
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6557531 |
Thermal type air flow meter
To perform with high accuracy the analog-to-digital conversion of signals of an air flow meter irrespective of fluctuation of a reference voltage of an analog-to-digital conversion circuit. A...
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6520009 |
Air flow rate measuring apparatus
An air flow rate measuring apparatus generates a flow rate signal with a nonlinear characteristic from a flow rate detecting unit provided with a heat generating resistor and converts that into a...
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6516785 |
Air flow sensor
In a thermal air flow sensor, an air flow measuring element and an intake air temperature sensing element of an intake air temperature sensor are mounted on a single support member so as to be...
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6490915 |
Thermal type air flow sensor and control device for a vehicle
A thermal type air flow rate sensor is formed with at least a heating resistor and a temperature measuring resistor on a semiconductor substrate via an electric insulation film, by forming the...
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6435023 |
Heating resistor type air flow rate measuring apparatus
A heating resistor type air flow rate measuring apparatus is provided with a couple of heating resistors placed at the positions where those resistors may each interfere thermally with respect to...
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6427527 |
Diagnostic method of determining causes of faults in the formation of an air/fuel mixture for an internal combustion engine
The invention is directed to a method for determining causes of faults in the formation of the air/fuel mixture for an internal combustion engine. First, different operating parameters of the...
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6427668 |
Thermal-type airflow meter, intake air system for an internal combustion engine, and control system for the same
The thermal-type airflow meter comprises airflow meter body 86 and measuring part 87. Both of the frame 31 of the housing 3 accommodating therein the electronic circuit 6 and the...
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6422070 |
Device for measuring the mass of a flowing medium
Devices for measuring the mass of a flowing medium using a temperature-sensitive measuring element have the disadvantage that considerable measuring errors may occur in the event of a pulsating...
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6381548 |
Method and device for measuring fluid flow
Method for measuring a fluid flow, in particular an air flow (L), flowing in a flow canal to an engine (VM) or from an engine (VM), by means of a fluid mass measuring means ( 3 ) connected to an...
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6345531 |
Measuring device for measuring the mass of a flowing medium
A measuring device serves to measure the mass of a medium flowing in a line along the primary flow direction, in particular the mass of aspirated air of an internal combustion engine. The measuring...
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6332356 |
Measuring device for measuring the mass of a medium flowing in a line
A measuring device for measuring the mass of a medium flowing in a flow line, in particular the aspirated air mass of an internal combustion engine, including a measuring element bathed by the...
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6298720 |
Measurement device for measuring the mass of a medium flowing in a line
A measurement device for measuring the mass of a medium flowing in a line along a line longitudinal axis, in particular the intake air mass of an internal combustion engine. The measuring device...
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6282485 |
Air estimation system and method
A system and method for estimating air entering a cylinder of an internal combustion engine uses a discrete algorithm based on a measurement of air entering a manifold. The filter parameter of the...
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6276198 |
Device for measuring the mass of a flowing medium
A device for measuring the mass of a flowing medium having a measurement element accommodated in a measurement support, and a flow rectifier with a grid provided upstream of the measurement...
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6272920 |
Device for measuring the mass of a flowing medium
A device for measuring the mass of a medium flowing in a line, especially the aspirated air mass on an internal combustion engine, comprising a flow tube, which is disposed in the line. A measuring...
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6272423 |
Method for correcting airflow in an internal combustion engine which is drawn in through an induction pipe and measured in the induction pipe
A method and apparatus is provided for correcting the airflow in a combustion engine drawn in through an induction pipe and measured in the induction pipe. The measured airflow is multiplied by a...
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6267006 |
Air induction assembly for a mass air flow sensor
An air induction assembly 10 disposed in an intake passage through which air flows to an engine. The air induction assembly 10 has a conduit member 20 which defines an air flow path. A mass air...
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6223594 |
Thermal type air flow amount measuring apparatus having flow rectifier
A thermal type air flow amount measuring apparatus is provided for measuring, a amount of air flowing in an air flow passage. The apparatus includes a bypass passage unit for bypassing a part of...
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