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7621176 |
Method for determining the crankshaft position of a rotating crankshaft of an internal combustion engine
The absolute crankshaft angle of an internal combustion engine of a hand-held power tool is to be determined. The engine has a cylinder with a combustion chamber delimited by a piston that drives a...
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7174778 |
Control device for a motor vehicle
Control device for a motor vehicle, particularly for controlling a gearbox, with an electronic control circuit arranged on a support plate in a housing; for measurement of the hydraulic pressure, a...
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7107829 |
Powertrain testing apparatus
A powertrain testing apparatus for testing performance testing of a powertrain provided with an input shaft and an output shaft that are disposed on different axes. The testing apparatus includes...
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7036360 |
Powertrain dynamic tilt test rig
A test rig is provided for dynamic or static testing of a vehicle powertrain apparatus during operation in varying attitudes. A specific embodiment includes inner and outer frames carried one...
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6874360 |
Method of determining rubbing friction torque in a motor vehicle powertrain
A method of determining the rubbing friction torque involves characterizing fuel cutoff engine deceleration, and calculating the rubbing friction torque for any combination of engine speed and...
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6758087 |
Method, system and storage medium for determining a vehicle reference speed
An exemplary embodiment of the invention is a method for determining a reference speed approximating a ground speed of a vehicle having a plurality of axles. The method includes selecting a minimum...
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6675653 |
Method and system for detecting drive train vibrations
A method and system for detecting drive train vibration. The system includes a programmable controller programmed to generate an output signal based on information from a wheel sensor located to...
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6647767 |
Apparatus for measuring the movements of an axle housing in a vehicle drive train system
An apparatus for measuring the movements of a component in a drive train assembly, such as an axle housing in a vehicular drive train assembly, includes a motion transfer member having a first end...
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6612163 |
Device for testing transaxle
A device for testing a transaxle is constructed such that a drive motor is coupled with an input shaft of the transaxle through an input-shaft torque meter, and dynamometers are coupled with output...
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6588256 |
Method and device for determining torque setpoint values for a motor vehicle having at least two drive assemblies
A method of determining setpoint values in motor vehicles that have at least two drive assemblies. Torque setpoint values are determined in separate evaluation branches for each of the drive...
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6578411 |
Method and apparatus for analyzing a drivetrain assembly
A method and an apparatus 10 for determining or identifying the torsional modes of a portion of a vehicle 12 , such as a drivetrain assembly including a crankshaft 14 , a driveshaft 16 , a...
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6568257 |
Cylinder air charge estimate
A method for obtaining an accurate cylinder air-charge estimate is presented. First, a sensor-based powertrain torque estimate is obtained. Next, a torque converter-based powertrain torque estimate...
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6360156 |
Method and system of determining an acceptable torque level to be applied to at least one clutch pack of an automobile
A method is provided for determining an acceptable torque level to be applied to at least one clutch pack (of an automobile) which includes the requirement of internal slip to transmit torque. The...
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6279391 |
Electrical engine firing pulse converter
Systems are provided which retard rotation of a driveline at times associated with an engine firing pulse from an engine driving the driveline to reduce torque peaks. In one system, a control...
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6189376 |
Transfer case controller test fixture
A text fixture for testing a transfer case electronic control unit according to this invention comprises an eletro-mechanical shift mechanism having electronic inputs and outputs for coupling to...
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6158274 |
Method of determining quantities describing vehicle travel behavior
To measure the signal of a yaw rate sensor and/or a transverse accelerometer, the present invention discloses taking into account the rotational speeds of a respectively selected wheel pair for...
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6138065 |
System and method for monitoring a performance characteristic using temperature and lubrication level of vehicle components
A method and system for providing enhanced diagnostic ability for monitoring vehicle performance characteristics includes utilizing a combination of temperature and lubrication level information. A...
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6082190 |
Adapter for facilitating the measurement of the angular orientation of vehicle drive train components
An adapter for facilitating the measurement of the angular inclination of components having yokes secured thereto in a vehicular drive train system. The adapter includes a cylindrical shaft portion...
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6029511 |
Method and apparatus for improving vehicle driving stability during deceleration
The invention provides a method for detecting the wheel rpm values of the nondriven and the driven wheels and for comparing them with one another in order to improve vehicle stability, for example...
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5999864 |
Method of power management for a hybrid powertrain system
A method of power management for a hybrid powertrain system includes the step of determining a storage power from a power flow into or out of an energy storage apparatus. The method also includes...
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5939625 |
Fault diagnosis method and apparatus for control system
A fault diagnosis method and apparatus for a control system that includes a plurality of actuators and a plurality of sensors for controlling the operation of the actuators in accordance with the...
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5932801 |
Failure diagnosis system for automobile engine
A failure diagnosis system for automobile engines comprises an inverter motor (6) connected to a rotary shaft of an engine to be measured (2) and intended to rotate the engine (2), a microphone (8)...
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5801301 |
Operating condition detecting system for automotive vehicle
An operation condition detecting system for an automobile vehicle includes a fifth wheel rotatably connected to a shaft protruding downward from the bottom center of an automobile chassis. A first...
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5792948 |
Active vibration control apparatus for vehicle
A vibration control apparatus for a vehicle equipped with a power unit and a vehicle body is comprised of an active engine mount disposed between the power unit and the vehicle body. A controller...
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5693878 |
Torque converter clutch engagement test
A method for testing the application of a torque converter clutch in vehicle having an electronic control unit and a driveline system including an engine, a transmission, a torque converter...
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5686662 |
Brake control system
A vehicle yaw rate control method comprising the steps of: first estimating vehicle yaw rate responsive to a first set of criteria; second estimating vehicle yaw rate responsive to a second set of...
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5465616 |
Method of inspecting various control functions of a motorcar
A plurality of control functions of a motorcar are inspected by grouping the control functions into a first group having a function of accelerating at least one wheel and a second group having a...
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5449956 |
Dual pedal operation of electronically-controlled vehicle engine
An automotive vehicle that is powered by an electronically-controlled engine, such as a truck that is powered by an electronically-controlled diesel engine, is equipped with dual sets of controls,...
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5415034 |
Robot for driving automobile on chassis dynamometer
The driving robot placed on the driver's seat can be easily and surely fixed. The supporting rod 4 is laid on the front side of the body 2 of the robot 1, connected with the end portions of the...
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5400648 |
Process and device for measuring the variation in internal pressure in the cylinder of a piston engine
In order to determine the course of a varying internal pressure in the cylinder of a piston-type internal combustion engine using measurement sensors which are in interaction with the outside of...
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5396792 |
Apparatus and method of controlling a robot to automatically simulate driving of a motorcar
A method and apparatus for controlling a robot to simulate driving of a motor vehicle while the vehicle is actually on a chassis dynamometer includes provision for quickly, automatically, and...
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5394743 |
Method and apparatus for controlling a robot to simulate driving of a motorcar
A method of controlling a robot for testing of a motorcar by the simulated driving thereof, as on a chassis dynamometer. The robot is capable of detecting shifted operating quantities of actuators...
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5386723 |
Device for detecting faulty firing in an internal-combustion engine
In a device for detecting faulty firing in an internal-combustion engine, a combustion-chamber pressure is measured at two crankshaft positions before and after each top dead center for each...
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5372035 |
Robot for driving an automobile on a chassis dynamometer
A robot for driving a vehicle safely stops the vehicle's engine even in the event of an accident such as an electric power failure or operating error. A robot body is provided with an ignition...
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5359884 |
Displacement sensor for an actuating drive in particular in a vehicle
A displacement sensor for an actuating drive, particularly in a vehicle, having an actuating motor and an especially power takeoff member of the actuating drive, comprising a sensor housing having...
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5347857 |
Phase detection apparatus and method
Machine assemblies often include driving and driven members such an engine associated with a driven load. These members typically include rotatable shafts (16, 18) interconnected by a flexible...
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5341675 |
Assembly for identifying the direction of power in the case of torque transmission
The invention has an assembly for identifying the direction of power in a driveline in the case of torque transmission. The assembly includes a positively driven first drive element and a second...
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5319962 |
Device for the identification of vehicle and equipment features
A device for the identification of vehicle features essentially comprises an electronic memory circuit which is arranged fixed to the vehicle and which can be read by an external apparatus which is...
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5287738 |
Sensor system for antilock brakes
A target carrier is clamped between a constant velocity joint and a spindle bearing inner race such that an encoded target mounted on the target carrier rotates with a wheel spindle over which the...
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5265468 |
Error detection and display system
An error detection and display system for an apparatus having first and second operating states comprises a testing device, a display unit (e.g., a warning light), and a switch-on control unit. The...
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5115678 |
Method of checking the function of a driving wheel slip control system
A method of checking the functioning of a driving wheel slip control system installed in a vehicle. Driving wheels are placed on support rollers and rotatably supported thereby. The driving wheels...
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5109696 |
Powertrain performance assessment system
An apparatus is adapted to assess the performance of a vehicle's powertrain. A microcomputer collects sensor data indicative of the rotational velocity of an output shaft and a transmission input...
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5097699 |
Method and system for testing automotive power transmission and analyzing engine output characteristic using dynamometer
A system and method for testing a specimen such as a vehicular power transmission (e.g., an automatic transmission) and analyzing an engine output characteristic of an engine connected to the power...
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5074145 |
Fault diagnostic apparatus for a hydraulic pressure source
An apparatus for diagnosing a fault of a hydraulic pressure source, including a fluid tank, a pump for pumping up fluid from the fluid tank, an accumulator for accumulating the fluid pumped up by...
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5058423 |
Method of checking the functioning of a driving wheel slip control system
A method of checking the functioning of a driving wheel slip control system installed in a vehicle. Driving wheels are placed on support rollers and rotatably supported thereby. The driving wheels...
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4986114 |
Test apparatus for motor vehicles, especially brake test stand for vehicles with antiskid brake systems
The invention deals with a traveling or driving simulator and especially a rake test stand for vehicles with antiskid brake systems, with drive rollers assigned to the vehicle wheels to be tested...
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4939985 |
Test bench for testing the drive train of a vehicle
A test bench for testing a drive train of a test vehicle from an internal combustion engine up to drive shafts for wheels includes an electronic function element or computer simulating moments of...
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4938057 |
Parking brake device
A parking brake device is provided in which an actuating arrangement is positioned on a fixed bracket and cooperates with a spring device so as to control a switch system. The spring device is...
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4898026 |
Process for testing driving axles and device for performing the process
A method of and apparatus for testing axles for motor vehicles and especially the drive axles for trucks, has a testing stand in which the axles are supported and connected to a drive motor and...
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4898084 |
Sensor-controlled hydraulic system with electroviscous fluids
A system-integrated motion sensor is provided for monitoring and adjusting EVF system. The motion sensor is based on the concept that, with the aid of electrodes (4,5) that are already present and...
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