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Class 73/117.3 - With continuous operation


Subclass of Class 73 - Measuring and testing
Definition: Subject matter where the tests are made without shutdown
No. of patents: 1271
Last issue date: 08/12/2008


1                      
NumberTitleIssue Date
7409877Dynamometer adapter for motorcycles
The invention relates to the field of dynamometer drive adapters. In particular, the invention relates to dynamometer drive adapters for motorcycles. ...
08/12/2008
7409854Method and apparatus for determining an operating status of a turbine engine
A method and apparatus for determining the operating condition of a turbine engine. An eddy current sensor is provided having a sensing field in communication with a plurality of rotating turbine blades during a revolution of a turbine engine. A threshold point valu...
08/12/2008
7409285Homogeneous charge compression ignition engine operation
An HCCI engine is operated by controlling a plurality of engine operating parameters in accordance with a calibration data set representing equilibrium set-points of engine operation characterized by combustion phasing that is relatively least sensitive to cylinder ...
08/05/2008
7404315Engine idle performance fault source control system
An engine idle fault control system that identifies a source of rough idle in an engine includes a first module that monitors an idle speed of the engine and that generates a rough idle signal, and a second module that monitors a fuel control parameter. A third modu...
07/29/2008
7401504Method of detecting start of combustion in diesel engines using in-cylinder pressure
Disclosed herein is a method of estimating the start of combustion (SOC) in a diesel engine using a difference between an in-cylinder combustion pressure and a motoring pressure so as to effectively control the combustion in a combustion chamber. The method of the p...
07/22/2008
7400993Method and system for accuracy of speed and acceleration measurements on rotating machinery with a speed wheel
A method and system for calculation of rotation dependent parameters in a system that senses shaft rotation of a toothed speed wheel. The method includes determining the passing edges of multiple gear teeth on a rotating speed wheel; calculating rotational speed of ...
07/15/2008
7389683Method and device for detecting a combustion misfire
An internal combustion engine has a plurality of cylinders that have been allocated in at least two groups to one exhaust gas tract each. In each exhaust gas tract, an exhaust gas catalytic converter and an exhaust gas probe are fitted upstream of the exhaust gas ca...
06/24/2008
7387011Deterioration diagnosis system for exhaust gas sensor
A diagnosis device calculates a lean-direction responsiveness characteristic and a rich-direction responsiveness characteristic of the exhaust gas sensor. The lean-direction responsiveness represents a responsiveness of the sensor in a case that an air-fuel ratio is...
06/17/2008
7380449Method and device for testing a fuel metering system
A method and device for testing a fuel metering system. A control unit checks the injector contacts during the initialization phase prior to starting up the fuel metering system. For the test, the injectors are activated by the control unit, and the current values a...
06/03/2008
7380547Adaptive NOx emissions control for engines with variable cam phasers
A control system for adjusting levels of emissions exiting an engine includes a NOx sensor that generates a NOx signal in response to oxides of nitrogen (NOx) in an exhaust gas and a control module that communicates with the cam phaser. The rotational position of th...
06/03/2008
7380444Acceleration/deceleration detection device and method for four-cycle engines
The engine acceleration detection device compares a intake manifold pressure at a certain crankshaft angle with the intake manifold pressure at 720 degrees before this crankshaft angle. If the difference between these two pressures is a predetermined value or more a...
06/03/2008
7370516Method for estimating transmission input torque
A method for estimating transmission input torque is provided. The method includes identifying a plurality of measurable characteristics that influence transmission input torque. Thereafter, transmission input torque values are measured on a sample powertrain operat...
05/13/2008
7370517Method of operating an internal combustion engine by determining angular positions of a crankshaft and camshaft
A method of operating an internal combustion engine in a motor vehicle has the steps of determining angular positions of a crankshaft and a camshaft from signals of two detecting devices, monitoring a relative angular position of one of the shafts relative to the ot...
05/13/2008
7369932System and method for turbine engine fault detection using discrete event system modeling
A system and method is provided for fault detection in a turbine engine. The fault detection system and method uses discrete event system modeling to provide improved fault diagnosis and prognosis. The fault detection system and method receives sensor taken at multi...
05/06/2008
RE40262Method to infer engine coolant temperature in cylinder head temperature sensor equipped vehicles
The present invention provides a method of inferring the engine coolant temperature in cylinder head temperature sensor equipped vehicles including the steps of measuring the cylinder head temperature, calculating the engine coolant temperature from the measured cyl...
04/29/2008
7363803Failure diagnostic system for fuel vapor processing apparatus
In a failure diagnostic system for a fuel vapor processing apparatus, a processing flow path comprising a vapor line, a canister and a purge line is closed with a vapor control valve and a purge control valve. The interior of the processing flow path is reduced in p...
04/29/2008
7366613RF wireless communication for deeply embedded aerospace systems
A wireless communication interface for inertial measurement unit is disclosed. One or more instrumentation sensors, a processor, a wireless radio frequency transceiver with an antenna, and a power source are sealed within an inertial sensor assembly. The processor i...
04/29/2008
7365535Closed-loop magnetic sensor system
A closed loop magnetic sensor system for measuring an input magnetic field from a magnetic field source has a compensation circuit, which can be for example a printed wire board, and a magnetic sensor, such as a Magnetoresistive (MR) sensor, for measuring an input m...
04/29/2008
7360407Crank angle detecting apparatus and reference angular position detection method for internal combustion engine
A rotor is provided such that the rotor rotates with a crank shaft of an engine. A plurality of detection sections are formed on a rotor periphery at equal angle intervals. A particular detection section is used for detection of a reference crank angle. A pickup is ...
04/22/2008
7360406Method of determining the rest position of an internal combustion engine
The final rest position of an internal combustion engine crankshaft is determined by counting pulses of a CRANK signal responsive to crankshaft rotation after engine turn-off and evaluating the timing of the pulse edges to detect reversals in the direction of cranks...
04/22/2008
7363143Control apparatus for internal combustion engine
A control apparatus for an internal combustion engine, comprising crank angle calculation means for calculating a crank angle between edges which are detected by a first crank angle sensor and a second crank angle sensor, on the basis of a crank cycle between the ed...
04/22/2008
7359794Control device for internal combustion engine
An intake pressure is successively detected by a pressure sensor, and an intake pressure derivative is calculated. Next, a peak pressure detecting range for each cylinder is set based on the intake pressure derivative. Next, an upward peak pressure and a downward pe...
04/15/2008
7357019Faulty lifter oil manifold assembly solenoid diagnostic system
A diagnostic system that detects a faulty lifter oil manifold assembly solenoid includes a current measurement module, a time delay module, a voltage measurement module, and a diagnostic module. The current measurement module measures current flowing through the sol...
04/15/2008
7353697System for mounting an engine to a frame
A system for mounting an engine to a frame in a manner to permit measurement of its torque by a transducer which is isolated from loads induced by installation misalignments, frame deflections and acceleration induced forces. One embodiment of the system is compatib...
04/08/2008
7353795Method for cylinder diagnostic test in an internal combustion engine
In a multi-cylinder piston engine, a diagnostic method of determining if there is low compression in a cylinder (5) by using a split engine brake (18) and turning the engine brake on during one cycle and the engine brake off during another cycle and me...
04/08/2008
7355300Solid state turbine engine ignition exciter having elevated temperature operational capability
A turbine engine ignition exciter circuit applies energy stored in the exciter tank capacitor to the load (igniter plug) through a thyristor type semiconductor switching device that minimizes leakage current at elevated operating temperatures. The semiconductor swit...
04/08/2008
7353698Test stand for simulation of the exhaust flow of an internal combustion engine
This invention relates to a test stand for simulation of the exhaust flow of an internal combustion engine, comprising a cylinder (36) and a base body (39) which is designed as a cylinder head and in which at least on...
04/08/2008
7356428Overhead traveling vehicle testing and calibration
A method, system and test fixture for allowing testing and calibration of various operation parameters of an overhead traveling vehicle (hereinafter “OTV”) are disclosed. The invention implements a test fixture that includes a rotatable bearing set for rotatably...
04/08/2008
7350405Disturbance-resistant bumpless crankshaft position sensing
Disclosed herein are methods of generating a virtual crankshaft positioning stream of signal pulses that is derived from one or more series of actual crank signals. The virtual stream is useful for monitoring crankshaft positioning and is able to persist despite ele...
04/01/2008
7349795Method and system for adaptation of transient engine performance
A method and a system for adaptation of transient engine performance capable of reducing a time for the transient test of an engine and also reducing a man-hour for preparing control software for the engine, wherein the test is performed by using the actual engine i...
03/25/2008
7347086System and method for burner-based accelerated aging of emissions control device, with engine cycle having cold start and warm up modes
A method for accelerated aging of an automotive catalytic converter under conditions incorporating cold start simulations. ...
03/25/2008
7331219Method for determining fluctuating fuel properties during the operation of a power plant
The invention relates to a method for detecting fluctuating fuel properties during the operation of a power plant. According to the inventive method, the actual operating characteristics of the power plant are used to determine the efficiency of the power plant and ...
02/19/2008
7331214Method for adapting the detection of a measuring signal of a waste gas probe
The invention relates to a waste gas probe which is disposed in an internal combustion engine, comprising a plurality of cylinders and injection valves associated with the cylinders, in order to measure fuel. The waste gas probe is arranged in a waste gas tract and ...
02/19/2008
7333007Process for the output of information in a vehicle
In the case of a process for the output of information in a vehicle having an information source for the output of information which is generated as a function of the driver's behavior and, in the case of which the driver's behavior is determined by using data of on...
02/19/2008
7328686System and method to control cylinder activation and deactivation
Engine cylinder reactivation from a fuel-cut state is controlled based on a calculated future engine speed and a minimum allowable engine speed. The future engine speed is calculated based on the current rate of change of engine speed and a duration required to reac...
02/12/2008
7325446Rough road detection system using normalization analysis
A rough road detection system for an engine having a crankshaft includes a control module and a comparison module. The control module receives a crankshaft speed signal and determines a crankshaft rotation time and a crankshaft acceleration and jerk. The crankshaft ...
02/05/2008
7324891Engine control method and device
An engine control method and compensation suitable for the case that both of two manifold pressure sensors in individual groups have failed. When detection outputs from two manifold pressure sensors are different from each other, a first comparing section determines...
01/29/2008
7322178Device for indicating a residual power margin of aircraft turbine engines
A device for indicating a residual power margin of aircraft turbine engines includes a measuring stage associated with at least one turbine engine of an aircraft to measure a number of first parameters related to a power output of the engine; a calculating unit asso...
01/29/2008
7320308Method of cylinder pressure sensor data/angle capture for low and high resolution
A method/system for measuring cylinder pressures of an internal combustion engine includes a crank angle sensor utilized to generate pressure readings at known angular intervals. Additional time-based pressure measurements are taken in selected angular windows betwe...
01/22/2008
7318341Method and device for monitoring a signal
A method and a device for monitoring a signal, in particular a pressure signal that characterizes the pressure differential at the input and output of an exhaust after-treatment system, are described. Errors are recognized on the basis of the occurrence of oscillati...
01/15/2008
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