|
Match
|
Document |
Document Title |
|
|
5870688 |
Misfire diagnostic system for internal combustion engine
A misfire diagnostic system for an Internal combustion engine comprises a crank-shaft angle sensor for monitoring a crankshaft angular velocity reflecting a combusting condition of each of engine...
|
|
|
5866810 |
Method of detecting disturbances in an internal combustion engine caused by an empty fuel tank
The invention is directed to a method of detecting disturbances of the crankshaft rpm for an internal combustion engine which are caused by an empty tank. Uneven-running values (LU) of the engine...
|
|
|
5864770 |
Speed and power control of an engine by modulation of the load torque
A system and method of speed and power control for an engine in which speed and power of the engine is controlled by modulation of the load torque. The load torque is manipulated in order to cause...
|
|
|
5862505 |
Misfire discriminating method and apparatus for an engine
A rotational difference between the speed corresponding to a cylinder at a combustion stroke and the speed corresponding to the cylinder at a previous combustion is calculated. Then, a corrected...
|
|
|
5862506 |
Modified trimmed mean filtering for misfire detection
A modified trimmed mean filtering method and apparatus for a misfire detection includes acquiring a time-continuous series of acceleration data samples (601) representative of acceleration behavior...
|
|
|
5848372 |
Apparatus for detecting trouble states in engine
An apparatus detects trouble states in a gas engine in which the exhaust gas pressure after combustion in each cylinder is measured by a pressure sensor installed on a collecting exhaust pipe. An...
|
|
|
5835877 |
Automatic speed control with lash compensation
Mechanical lash in a cruise control system including a cruise control actuator linked to an engine intake air valve through a cruise cable assembly is automatically measured and stored for use in...
|
|
|
5832404 |
Device for detecting misfiring in a multi-cylinder internal combustion engine
A device for accurately detecting misfiring repetitively occurring in the opposing cylinders every 360° CA. An angular velocity detecting means detects the angular velocity of rotation of the...
|
|
|
5824890 |
Real time misfire detection for automobile engines
An apparatus and corresponding method for detecting misfires of a motor vehicle internal combustion engine. The apparatus includes a speed sensor for generating a signal. Also, the apparatus...
|
|
|
5821411 |
Method for detecting combustion misfires via a separate classification of individual and permanent misfires
The invention is directed to a method for detecting combustion misfires on the basis of a first complex input feature signal wherein the nonuniformity of the rotational movement (on the basis of...
|
|
|
5822710 |
Method of detecting engine speed for detecting misfires in an internal combustion engine
The invention is directed to a method for detecting combustion misfires in a multicylinder internal combustion engine. The method includes the steps of: forming a criterion for the rough running of...
|
|
|
5819197 |
Method of misfire detection for an internal combustion engine
A method of misfire detection for an internal combustion engine in a motor vehicle includes the step of sampling a misfire indicator and filtering the misfire indicator to provide a filtered...
|
|
|
5815827 |
Crank angle signal processing apparatus
The present invention relates to a circuit for processing internal combustion engine crank angle sensor signals. The construction is such that an output side circuit of a crank angle sensor outputs...
|
|
|
5806014 |
Combustion control of an internal combustion engine proximate an extinction limit
A method and system of combustion control for an internal combustion engine (313) proximate an extinction limit includes measurement of acceleration behavior of the internal combustion engine and...
|
|
|
5803043 |
Data input interface for power and speed controller
A programmable interface which connects to an engine control device and allows convenient entry of engine performance limitation data such as maximum allowable vehicle speed and engine RPM's. Such...
|
|
|
5794171 |
Process for deriving predictive model of crankshaft rotation of a combustion engine
A predictive model is derived for subsequent use in a misfire detector in an internal combustion engine. Data collected using a test engine is curve-fitted using NARMAX techniques to obtain a...
|
|
|
5783744 |
Engine knocking detection system
A knocking detecting system has an electronic control unit to detect the knocking caused by an abnormal combustion of a gasoline engine. The electronic control unit determines whether the knocking...
|
|
|
5774820 |
Method and apparatus for limiting the speed of a motor vehicle
A method and apparatus for limiting the speed of a motor vehicle in which the power applied to the vehicle wheels is controlled even when the actual speed is within a range of permitted speeds, but...
|
|
|
5774823 |
Method of generation correction tables for misfire detection using neural networks
A method of automating the calibration of lookup tables containing correction values to be used in an on-board vehicle system is disclosed. The method includes training a neural network to model...
|
|
|
5771482 |
Estimation of instantaneous indicated torque in multicylinder engines
A method and apparatus for estimating instantaneous torque in an internal combustion engine includes a comprehensive model of internal combustion engine dynamics. Instantaneous net torque is...
|
|
|
5771483 |
Internal combustion engine torque measurement device and method
This method includes detecting the passage before a sensor of each of the teeth of the inertial flywheel of an engine; measuring the time of passage d i of each of these teeth; constituting a...
|
|
|
5753804 |
Spatial frequency implemented digital filters for engine misfire detection
A digital filter system is used in an internal combustion engine misfire detection system. The digital filter system includes a signal input for inputting a digital signal generated in response to...
|
|
|
5752213 |
Misfire detector with torsional oscillation filtering
Irregularities in crankshaft velocity introduced when measuring crankshaft rotation at a section of a crankshaft in an internal combustion engine that is less damped to torsional oscillations than...
|
|
|
5749063 |
Automatic vehicle speed controlling apparatus
An automatic vehicle speed controlling apparatus for a vehicle includes a vehicle speed sensor for sensing the actual speed of the vehicle and providing actual speed data proportional to the actual...
|
|
|
5747679 |
Method for detecting combustion misfires
The invention is directed to a method for detecting misfires in the combustion of a z-cylinder four stroke internal combustion engine wherein the engine includes a transducer wheel coupled to the...
|
|
|
5740045 |
Predictive spark controller
Engine speed control through variation in ignition timing of an air-fuel mixture in engine cylinders to vary engine output torque in response to current and predicted future engine speed error...
|
|
|
5734100 |
Device for diagnosing misfiring of a multi cylinder engine
A mechanism is provided for outputting reference signals in synchronism with the firing action of the cylinders of a multi cylinder engine. Correction coefficients are calculated for correcting...
|
|
|
5732382 |
Method for identifying misfire events of an internal combustion engine
A method for identifying engine combustion failure of an internal combustion engine having a plurality of cylinders, a crankshaft and a crankshaft position sensor includes the steps of operating...
|
|
|
5728941 |
Misfire detecting apparatus using difference in engine rotation speed variance
In a misfire detecting apparatus of an internal combustion engine, a difference in rotational-speed variance from a rotation signal NE of a crankshaft and the difference in rotational-speed...
|
|
|
5726892 |
Engine speed prediction method for engine control
Using a plurality of engine position reference pulses for each cylinder event, several reference periods for each cylinder event are defined and the engine speed can be accurately predicted for the...
|
|
|
5715726 |
Method and system for the diagnosis of idling speed control system
A system for the diagnosis of an idling speed control system has a first timer for measuring the time elapsed since entrance to a feedback control mode, an engine speed state detection unit for...
|
|
|
5717133 |
Mixed sampling rate processing for misfire detection
The present invention provides a method of detecting internal combustion engine misfiring. The method includes mixed rate sampling of crankshaft angular velocity for a plurality of cylinder firing...
|
|
|
5715162 |
Correlative filter for a synchrophaser
A synchrophaser for a multi-engine, propeller-driven aircraft including a filter that automatically compensates for misalignment of blade position sensor tabs through derivation and application of...
|
|
|
5712786 |
Idling speed control method and apparatus for an internal combustion engine
An idling speed control method and apparatus in which the field current of an alternator is turned on and off to control the power generation rate of the alternator in accordance with the terminal...
|
|
|
5708200 |
Method for sensing faulty combustion in an internal combustion engine
A method for sensing faulty combustion in an internal combustion engine by calculating, for each cylinder, a critical parameter (S) representing instantaneous engine speed changes on the basis of a...
|
|
|
5703283 |
Detrending engine positional data for rotating position encoders
A method for detrending engine positional data includes acquiring positional encoder data over a plurality of consecutive engine revolutions as the engine is decelerating. Then, a trend (207) in...
|
|
|
5699253 |
Nonlinear dynamic transform for correction of crankshaft acceleration having torsional oscillations
Irregularities in crankshaft velocity introduced when measuring crankshaft rotation at a section of a crankshaft in an internal combustion engine that is less damped to torsional oscillations than...
|
|
|
5698777 |
Camshaft revolution sensing assembly
A camshaft revolution sensing assembly for identifying a revolution of a camshaft, having a plurality of teeth, of an internal combustion engine of an automotive vehicle includes a camshaft sensor...
|
|
|
5696683 |
Method for reducing drive slip of a vehicle
In order to optimize control of drive slip, the torque demand of the drive is determined continuously taking into account the interfering torques acting on the vehicle, and the drive torque is...
|
|
|
5696316 |
Adaption device for transmitter wheel of combustion engine
A transmitter wheel is used for example to detect speed changes of an internal combustion engine with high precision in order to calculate a running imbalance value from them. A transmitter wheel...
|
|
|
5691469 |
Method of detecting combustion misfires
The invention is directed to a method for detecting combustion misfires in an internal combustion engine on the basis of a first signal wherein the nonuniformity of the rotational movement of the...
|
|
|
5676217 |
Method and system for detecting abnormality of vehicle constant speed travel control
A constant speed travel control system uses a time period Q which is set such that, if a motor of the actuator is not locked but normally rotated, actuator opening becomes almost certainly fully...
|
|
|
5665906 |
Device for generating a synthetic signal for testing knock control functions
A device for generating a synthetic signal for testing knock control functions in engine control devices of motor vehicles has a basic noise signal generating unit, a knock signal generating unit,...
|
|
|
5659134 |
Method for detecting abnormalities in a crank angle sensor and apparatus for detecting abnormalities in a crank angle sensor
To improve the reliability and detecting capability of an apparatus for detecting abnormalities in a crank angle sensor, the apparatus comprises detection keeping devices which assumes that there...
|
|
|
5646340 |
Analytical tachometers
Method and apparatus for engine and rotary machine analysis provides a vibration sensor adapted to produce a plurality of superimposed waveforms corresponding to engine or machine operating...
|
|
|
5644288 |
Vehicle speed detecting apparatus
Rotational speed of a vehicle speed detecting gear 1 is detected by a detection element 2 using an MRE or the like and the detected signal is waveform-shaped by a waveform shaping circuit 3 to...
|
|
|
5639960 |
Misfire detecting method and apparatus for an internal combustion engine
A misfire detecting apparatus for an internal combustion engine in which erroneous decision as to occurrence of misfire is prevented regardless of engine rotation speed variation pattern. The...
|
|
|
5638277 |
System for controlling a throttle valve in a following control system for motor vehicles
A throttle valve of a motor vehicle is controlled by a control unit through an actuator. The control unit determines a desired magnitude of longitudinal acceleration in accordance with running...
|
|
|
5638278 |
Apparatus for detecting an occurence of misfiring in an engine cylinder
In a misfire detecting device for an internal combustion engine having a plurality of cylinders, revolution detecting device detects the revolution of an engine; arithmetic device calculates...
|
|
|
5633456 |
Engine misfire detection with digital filtering
An apparatus and method are provided for detecting cylinder misfires in an internal combustion engine of a motor vehicle by digitally filtering out noise-related signals to improve the signal to...
|