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Class 73/118.1 - Testing auxiliary unit


Subclass of Class 73 - Measuring and testing
Definition: Subject matter for the testing of auxiliary units of motors
No. of patents: 1897
Last issue date: 09/30/2008


1                      
NumberTitleIssue Date
7428839Method for calibrating a turbocharger
A calibration flow position of a variable nozzle (6) of a turbocharger is set by a method for calibrating the turbocharger, which comprises a turbine (2) and a compressor (1). In this method, the turbocharger is driven by a predetermined fluid s...
09/30/2008
7424801System for diagnosing deterioration of catalyst
A diagnostic system in which the accuracy of the diagnosis of the deterioration state of a catalyst in a catalytic converter for cleaning the exhaust gas of an internal combustion engine is enhanced without incurring a rise in cost. The temperature of the catalyst i...
09/16/2008
7421888Regenerative system for testing torque converters and other transmission coupling devices
A test system for testing torque converters, other fluid coupling devices, and the like, e.g., devices that couple engine power to driveline power. The test system drives the test device with a first hydraulic motor, which is itself driven by a first hydraulic pump....
09/09/2008
7421836Air/fuel ratio validation for lean burn
A multi-cylinder group engine system operable in at least a first mode and a second mode, where in the first mode a first and second cylinder group combust air and fuel, and where in the second mode at least one of the first and second cylinder group combusts air an...
09/09/2008
7418336Method for internal combustion engine control using pressure ratios
The invention comprises a method to operate a direct-injection engine operative at various air/fuel ratios. The method comprises monitoring in-cylinder pressure, along with a corresponding engine crank position to periodically to determine instantaneous in-cylinder ...
08/26/2008
7412820Air-fuel ratio control system for internal combustion engine
An air-fuel ratio control system for an internal combustion engine having a catalyst provided in an exhaust system of the engine for purifying exhaust gases and a first oxygen concentration sensor disposed upstream of the catalyst is disclosed. The air-fuel ratio co...
08/19/2008
7409855Engine health monitoring
The present invention is a method of monitoring the health of a fuel system 30 of a gas turbine engine 10. The fuel system 30 comprising a fuel-metering valve 36, a hydraulic control valve servo pressure line 40 and a control press...
08/12/2008
7404291Exhaust gas purifying apparatus for internal combustion engine
An exhaust gas purifying apparatus for an internal combustion engine, including a filter provided in an exhaust system of the engine for trapping particulates in exhaust gases, and a pressure difference sensor for detecting a pressure difference between an upstream ...
07/29/2008
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
7401494Valve test apparatus and methods for testing a solenoid valve or a venturi valve
A valve test apparatus, a solenoid valve test method and a venturi valve test method are provided. The valve test apparatus may include a gas supply unit, a solenoid valve holding unit, a first measurement unit, a venturi valve holding unit, a second measurement uni...
07/22/2008
7398649System and method for influencing the induction gas temperature in the combustion chamber of an internal combustion engine
The invention relates to a system and method for use in a homogeneous charge compression ignition (HCCI) combustion engine that is preferably equipped with an exhaust gas recirculation device. This system and method enable an improved adjustment of the temperature l...
07/15/2008
7389767Method for diagnosis of a volume flow control valve in an internal combustion engine comprising a high-pressure accumulator injection system
The invention relates to an internal combustion engine comprising a high-pressure accumulator injection system wherein the swept volume and the pressure are regulated by means of a volume flow control valve (VCV) and a pressure control valve (PCV). The inventive met...
06/24/2008
7389682Method and apparatus for engine torque sensing
An engine torque sensory system (10), adapted for use with an engine-driven vehicle (12) having a flexplate (18), including at least one sensor (26) fixedly attached on the surface of the flexplate (18) and operable to detect defor...
06/24/2008
7389765Electrically controlled throttle apparatus
An electrically controlled throttle apparatus comprises a throttle valve for controlling an amount of intake air to be supplied to an internal combustion engine; a throttle body which houses the throttle valve; a motor for driving the throttle valve; and a throttle ...
06/24/2008
7387018Discrete variable valve lift diagnostic systems and methods
A diagnostic system for a discrete variable valve lift system of an internal combustion engine is provided. The system includes: a Fast Fourier Transform (FFT) module that generates a frequency content signal based on a FFT method and a valve impact sensor signal; a...
06/17/2008
7383722Fuel vapor treatment system with leak diagnosing
A fuel vapor purge system is configured to execute a highly accurate leak diagnosis with respect to a fuel vapor leak. After the engine is stopped, the temperature of the fuel vapor rises temporarily and then decreases until it reaches the outside ambient temperatur...
06/10/2008
7380446Method for determining the rotary speed of a compressor, especially a turbocharger
A method for determining the rotary speed of a compressor, e.g., a turbocharger of an internal combustion engine, includes detecting the pressure in a region that is downstream from the compressor and generating a corresponding pressure signal. The rotary speed of t...
06/03/2008
7380445Turbocharger performance qualification method and apparatus
A method for qualifying turbocharger performance includes the step of operating a turbocharger at a single test condition (402). A set of data may be acquired from a set of operating parameters of the turbocharger (404) operating at the test condition....
06/03/2008
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
7377154Monitoring of exhaust gas limiting values
In a method for monitoring an exhaust gas limiting value of an internal combustion engine using an engine controller, the engine controller has at least one exhaust gas sensor, and an error signal is output when the exhaust gas limiting value is exceeded. If the emi...
05/27/2008
7370540Rotation angle sensor, in particular for an electrical steering system of an industrial truck
Rotation angle sensor, in particular for an electrical steering system of an industrial truck, in which two magnetic field sensitive sensor elements are arranged on orthogonal axes and a permanent magnet is attached to a shaft extending through the axis intersection...
05/13/2008
7370542Flat belt durability tester
The apparatus is a multi-speed flat belt durability tester that can simultaneously test several belts of different lengths. The tester can apply different tensions to each belt with a tension pulley powered by a hydraulic cylinder, and it monitors the tracking of th...
05/13/2008
7372139Semiconductor chip package
A semiconductor chip package may include a substrate, which may have bonding pads formed thereon. A semiconductor chip mounted on the substrate may have chip pads, and electrical connections for connecting the chip pads of the semiconductor chip to the substrate bon...
05/13/2008
7367326Failure diagnosis apparatus for evaporative fuel processing system
A failure diagnosis apparatus for diagnosing a failure of an evaporative fuel processing system. The system includes a fuel tank, a canister having adsorbent for adsorbing evaporative fuel generated in the fuel tank, an air passage connected to the canister for comm...
05/06/2008
7367188System and method for diagnostic of low pressure exhaust gas recirculation system and adapting of measurement devices
A system for a diesel engine having an intake manifold and an exhaust manifold, comprises a turbocharger between the intake and exhaust manifolds; a low pressure exhaust gas recirculation system having a first valve coupled thereto for regulating flow; a high pressu...
05/06/2008
7367291Locomotive apparatus
In a railroad locomotive for operation in low ambient temperature conditions with the locomotive having an engine which includes a cooling system using a coolant liquid, a coolant liquid containment system is provided and includes a containment tank, an inlet port i...
05/06/2008
7369937Intake air temperature rationality diagnostic
A method of determining whether a fault condition of an intake air temperature (IAT) sensor of an engine is present includes estimating a first intake charge temperature (ICT) based on an estimated first ICT and a previously estimated first mass air flow (MAF) and e...
05/06/2008
7367223Method and device for assessing the quality of a fuel, in particular a diesel or petrol fuel
Fuels that are used nowadays can have a different densities or different heating values. Even when filling the fuel tank (7) the quality of the fuel in the fuel tank (7) can change since different fuels are mixed. For example a low density or a low hea...
05/06/2008
7367220Engine oil leak test method with EGR valve leak offset
A method for pressure testing an engine to detect possible oil seal leaks. The engine is charged with a predetermined pressure while air pressure is also applied to an exhaust gas recirculation (EGR) valve intake port to offset leakage inherent in the EGR valve. The...
05/06/2008
7367321Erroneous connection detecting method of ignition devices and apparatus of the same
A method and an apparatus detect an erroneous connection between a plurality of ignition devices and a fuel injection control device. A first time interval is measured from an input of an ignition signal for a certain cylinder to an input of the next ignition signal...
05/06/2008
7366604Fuel vapor treatment system with leak diagnosing
A fuel vapor purge system is configured to execute a highly accurate leak diagnosis with respect to a fuel vapor leak. After the engine is stopped, the temperature of the fuel vapor rises temporarily and then decreases until it reaches the outside ambient temperatur...
04/29/2008
7364529Control device for hydraulic automatic transmission for vehicle
A control device for a hydraulic automatic transmission for a vehicle, including start control device for supplying a hydraulic pressure to a first hydraulic engaging element for a low-speed position and a second hydraulic engaging element for a high-speed position ...
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
7363804Method for detecting malfunction of a cooling system based on detected coolant temperature
A malfunction of a thermostat in a coolant circulating path is detected from an engine side coolant temperature in consideration of the following behavior of the coolant temperature. When an open-malfunction occurs, the coolant temperature becomes different consider...
04/29/2008
7362214Branching device for transmission line and monitoring apparatus using the same
A branching device for a transmission line, including a main transmission line including at least two signal lines and having respective connectors provided at either end; a first branch transmission line which branches from the signal lines and which has a branch-u...
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
7363132Method and system for controlling steering deadband in a mobile machine
Embodiments of the present invention recite a method and system for controlling steering dead band in a mobile machine. In one embodiment, a first dead band value for actuating a steering mechanism in a first direction is determined. Then, a second dead band value f...
04/22/2008
7360359Hydraulic system having an emergency release mechanism for a clutch having servo-assisted pedal actuation
To disengage a clutch using the clutch actuation in the event of a failure of the system, having pedal force-assisted pressurization of the hydraulic system, composed of two hydraulic circuits, a master cylinder and a slave cylinder being essentially disposed in the...
04/22/2008
7360527Method for operating an internal combustion engine
A method for operating an internal combustion engine, particularly of a motor vehicle, is described. The engine has a number of cylinders (Z1, Z2, Z3, Z4), and in each of the cylinders (Z1, Z2, Z3, Z4), one mov...
04/22/2008
7360401Leak detector for evaporated fuel
An evaporated fuel leak detector detects leakage of an evaporated fuel generated in a fuel tank. The detector includes: a differential pressure valve, a pump for sucking a detection port side to reduce pressure on a fuel tank side, and pressure detection means for d...
04/22/2008
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