Abstract: An actuator system includes a piston-cylinder arrangement including a piston that is movable with respect to a cylinder. A first flow path is in fluid communication with the piston-cylinder arrangement and a second flow path is in fluid communication with the piston-cylinder arrangement. A control system is operable to fluidly connect the first flow path to a source of high-pressure fluid and to connect the second flow path to a drain to move the piston in a first direction. A pressure sensor is fluidly connected to the first flow path and is operable to measure sufficient pressure data during the movement of the piston to generate a pressure versus time curve. The control system is operable to compare the generated pressure versus time curve to a known standard pressure versus time curve stored in the control system to determine the condition of the piston-cylinder arrangement.

Abstract: An actuator system includes a piston-cylinder arrangement including a piston that is movable with respect to a cylinder. A first flow path is in fluid communication with the piston-cylinder arrangement and a second flow path is in fluid communication with the piston-cylinder arrangement. A control system is operable to fluidly connect the first flow path to a source of high-pressure fluid and to connect the second flow path to a drain to move the piston in a first direction. A pressure sensor is fluidly connected to the first flow path and is operable to measure sufficient pressure data during the movement of the piston to generate a pressure versus time curve. The control system is operable to compare the generated pressure versus time curve to a known standard pressure versus time curve stored in the control system to determine the condition of the piston-cylinder arrangement.

Abstract: A device for testing one-way or non-return valves, for example, those used during diving, that can be used to determine whether air is able to be sucked through the one-way or non-return valve and provides a visual confirmation of the test and outcome. The present invention also includes an improved method of testing one-way or non-return valves and a device for carrying out this method to make testing the one-way or non-return valve prior to diving safer and more effective.

Abstract: A valve monitoring apparatus has a system to determine a state of a valve. The system determines a fluid flow first pressure at a first location within a gas turbine engine, and a second pressure of a compressed fluid at a second location within the engine when the valve is in the first position; and compares the first and second pressures to determine the valve state. The system is arranged to command the valve to move from the first position towards a second position; determine the second pressure of the compressed fluid at the second location; compare the pressure at the second location when the valve is in the first position to the pressure at the second location when the valve has been commanded to move towards the second position; and, determine whether the valve has moved from the first position towards the second position when commanded to do so.

Abstract: Methods and systems are provided for diagnosing degradation of an exhaust valve coupled to an engine cylinder. In one example, a method may include, routing compressed air from an electric booster into a cylinder with the intake valve of the cylinder open and the exhaust valve closed, and indicating degradation of the exhaust valve based on an exhaust airflow relative to a baseline airflow.

Abstract: A tool cabinet having integral pneumatic air lines. The present invention is a tool cabinet having an inlet valve, which is adapted to have an air compressor attached thereto, and a plurality of outlet valves, which are adapted to have a variety of different pneumatic tools connected thereto. The present invention also has a plurality of holders disposed on the exterior surface of the tool cabinet to hold the pneumatic tools. The present invention is otherwise designed to function as a traditional tool cabinet, including having a plurality of drawers, hooks, slots, or other such structures adapted to hold and organize tools.

Abstract: Method of testing a gas shut-down valve for a combustion engine, by which method the valve is placed in a chamber of a holder 1 and the valve in closed condition is influenced by a non-burnable test gas under pressure to check whether the valve seat and the sealing ring 6 of the valve are close. Further the opening and closing functions of the valve are to be checked.

Abstract: An apparatus for the testing of valves, particularly compressor valves, to ensure that the valve assemblies are pressure tight, has a valve holder which is generally conical shaped with a generally circular cross section when viewed from above, and a resilient inner wall surface. The valve holder has an open throat end, and a smaller diameter apex end. A pump or plenum for forming a below-atmospheric (vacuum) volume is fluidly connected to the apex of the valve holder. A valve is placed in the valve holder so as to seal against the resilient inner wall. A pressure differential is created across the valve by the vacuum source, and the pressure in the space below the valve is monitored to detect any leakage across the valve.

Abstract: An actuator system includes a piston-cylinder arrangement including a piston that is movable with respect to a cylinder. A first flow path is in fluid communication with the piston-cylinder arrangement and a second flow path is in fluid communication with the piston-cylinder arrangement. A control system is operable to fluidly connect the first flow path to a source of high-pressure fluid and to connect the second flow path to a drain to move the piston in a first direction. A pressure sensor is fluidly connected to the first flow path and is operable to measure sufficient pressure data during the movement of the piston to generate a pressure versus time curve. The control system is operable to compare the generated pressure versus time curve to a known standard pressure versus time curve stored in the control system to determine the condition of the piston-cylinder arrangement.

Abstract: Methods and systems are provided for a compressor including a crankcase. A condition of the compressor may be diagnosed based on a valve leak condition of the compressor based on piston motion within the crankcase. Once a diagnosis is made, appropriate remedial action can be taken to minimize severity.

Abstract: An evaporated fuel processing apparatus includes a valve between a canister and a fuel tank, and adsorbs evaporated fuel by the canister during fuel filling, and introduces into an intake air line of an internal combustion engine and processes the evaporated fuel while the internal combustion engine is operating. A diagnostic apparatus includes: a pump for pressurizing a system including the fuel tank and the canister; and a pressure sensor for sensing an internal pressure of the system. The diagnostic apparatus diagnoses whether or not leakage is present, based on a change in the internal pressure of the system from a pressurized state, wherein the pressurized state is a state pressurized to a predetermined pressure for diagnosis that is higher than a tank pressure at start of diagnosis; and maintains the fuel tank in the pressurized state by closing the valve after termination of the diagnosis.

Abstract: An evaporation system leak diagnostic apparatus that purges fuel vapor from a fuel tank into an intake system of an internal combustion engine via a canister, includes: a first closed system leak diagnostic unit that executes a leak diagnostic on a first closed system based on a tank internal pressure detected by a tank internal pressure detecting device while the first closed system is formed with a first closed system forming device; and a second closed system leak diagnostic unit that introduces pressure in the first closed system into a second closed system by forming a second closed system with a second closed system forming device, and executes a leak diagnostic on the second closed system based on the tank internal pressure detected by the tank internal pressure detecting device, after the leak diagnostic by the first closed system leak diagnostic unit.

Abstract: Method of testing a gas shut-down valve for a combustion engine, by which method the valve is placed in a chamber of a holder 1 and the valve in closed condition is influenced by a non-burnable test gas under pressure to check whether the valve seat and the sealing ring 6 of the valve are close. Further the opening and closing functions of the valve are to be checked.

Abstract: Method of testing a gas injector valve for a combustion engine. The valve is placed in a holder (1) with a first chamber (2) and a second chamber (3), the valve spraying nozzle (11) being placed in the first chamber (2), after which the valve in a closed condition is influenced by a test gas under pressure to control whether the valve seat and the valve gaskets (13a, 13b) are leak proof. This method makes it possible to indicate the position of a leak if any.

Abstract: Method of testing a gas injector valve for a combustion engine. The valve is placed in a holder (1) with a first chamber (2)and a second chamber (3), the valve spraying nozzle (11) being placed in the first chamber (2), after which the valve in a closed condition is influenced by a test gas under pressure to control whether the valve seat and the valve gaskets (13a, 13b) are leak proof. This method makes it possible to indicate the position of a leak if any.

Abstract: A first determiner determines whether a pressure in a fuel tank is within a predetermined range when an ignition switch of an engine is on. A second determiner determines whether a valve allows or prohibits a communication between the fuel tank and a switch valve, when the first determiner determines that the pressure in the fuel tank is within the predetermined range. A control unit controls a pressure controlling portion based on a determination result of the first determiner and a determination result of the second determiner. A leak determiner determines whether the fuel tank has a leak of evaporated fuel based on a signal output from a first detector detecting a pressure in a detection passage and a signal output from a second detector detecting a pressure in the fuel tank.

Abstract: A valve that can be actuated by a position controller via a drive, wherein the position controller has a housing and is fastened to the valve by the housing. A first temperature sensor and a second temperature sensor are attached on or in the housing. As a result of the position of both sensors, the temperature measured using the first temperature sensor is more readily influenced by the valve and the temperature registered by the second temperature sensor is more readily influenced by the environment. If a gas leak occurs in the valve, a temperature difference occurs that is evaluated for diagnosis of a leak. The diagnostic system is particularly easy to minor implement with minimal effort.

Abstract: An apparatus for detecting a leak in a conduit line includes a housing in fluid communication with the line, a valve including a valve seat and a valve element movable relative to the seat between opened and closed positions, a bypass line around the valve, a flow detector coupled to the bypass line for detecting fluid flow therethrough, and a mechanism configured to urge the valve element toward the closed position and to maintain the valve element in the closed position until a threshold pressure drop is reached. The mechanism may operate on the principle of magnetism.

Abstract: Methods and apparatus for detecting a leak in a gas precharged hydraulic accumulator having an initial gas charge entail activating a hydraulic pump to charge the gas precharged hydraulic accumulator and the hydraulic circuit associated with the gas precharged hydraulic accumulator when the hydraulic circuit and the hydraulic accumulator have a temperature that is substantially equivalent to an ambient temperature, e.g., on a cold start. The hydraulic pressure in the hydraulic circuit is monitored, and when a step in the hydraulic pressure is detected, various quantities are measured and used to determine a volumetric efficiency of the pump for use in later calculations of remaining gas amount.

Abstract: The invention relates to a method for regulating a fuel tank venting valve of a motor vehicle during leak testing of a fuel tank venting system where the fuel tank venting valve is arranged in a recovery line that connects a retention vessel to catch fuel vapors from a fuel tank to an inlet manifold of an operating internal combustion engine, comprising sealing the tank venting system from the atmosphere outside the motor vehicle, opening the fuel tank venting valve to expose the fuel tank and the tank venting system to a relative negative pressure present in the inlet manifold of the operating internal combustion engine and regulating the degree of opening of the tank venting valve based upon the external pressure, pA.

Abstract: A first determiner determines whether a pressure in a fuel tank is within a predetermined range when an ignition switch of an engine is on. A second determiner determines whether a valve allows or prohibits a communication between the fuel tank and a switch valve, when the first determiner determines that the pressure in the fuel tank is within the predetermined range. A control unit controls a pressure controlling portion based on a determination result of the first determiner and a determination result of the second determiner. A leak determiner determines whether the fuel tank has a leak of evaporated fuel based on a signal output from a first detector detecting a pressure in a detection passage and a signal output from a second detector detecting a pressure in the fuel tank.

Abstract: An internal combustion engine has an intake system (1) and an exhaust gas system (4). An exhaust turbocharger of the internal combustion engine has a compressor (42) arranged in the intake system (1) and a turbine (48) arranged in the exhaust gas system (4) of the internal combustion engine for driving the compressor (42). In order to diagnose the intake system (1), a charge pressure (PHS_AIC_DOWN) of the compressor (42) is determined in a predetermined operating state of the internal combustion engine. A leakage of the intake system (1) downstream of the compressor (42) is recognized if the determined charge pressure (PHS_AIC_DOWN) is lower than the predetermined base charge pressure (PUT_BAS) in the predetermined operating state.

Abstract: A leak diagnostic system for a vehicle comprises a tank pressure module and a leak diagnostic module. The tank pressure module selectively outputs first and second fuel tank pressures when an engine is shut down and when engine vacuum is greater than a predetermined engine vacuum, respectively. The leak diagnostic module selectively diagnoses a leak in a fuel vapor purge valve based on the second fuel tank pressure when the first fuel tank pressure is less than a first predetermined pressure.

Abstract: A method and device for determining the hydraulic leakage rate of liquid-conveying parts, in particular injection valves for internal combustion engines, place the liquid-conveying part into a test body, and the liquid-conveying part is charged with a test liquid under a particular pressure, and a carrier gas stream is provided in a flow duct of the test body, and a vapor mixture behind the liquid-conveying part is conducted to an analyzer, and a measurement and analysis are carried out, using the analyzer, of the hydraulic leakage rate of the liquid-conveying part via the concentration of test liquid in the vapor mixture, the carrier gas stream being brought in via a nozzle element close to the leakage point of the liquid-conveying part, and/or a heating of the vapor mixture being provided behind the liquid-conveying part for complete conversion into the gas phase.

Abstract: A dual acting multi actuation gate valve is provided that includes a secondary actuation mechanism. The valve may include a body, a shaft, a movable portion disposed within the body and coupled to the shaft, wherein the movable portion is configured to allow fluid flow through the valve when in a first position and to prevent fluid flow through the valve when in a second position. The valve includes an actuator coupled to the shaft, wherein the actuator is configured to move the movable portion between the first position and the second position, a mechanical connection between the actuator and the shaft, wherein the mechanical connection is configured to fail in response to an internal pressure, wherein the failure of the mechanical connection maintains the movable portion in the second position. A method of operation and testing the valve are also provided.

Abstract: A method and apparatus for measuring the presence or absence of reaction between a first and second material of interest by measuring osmotic pressure changes in a reaction cell. The reaction cell is capable of measuring the small changes in pressure that occur due to osmotic pressure shifts during a catalytic or binding reaction at species concentrations down to approximately 10?7 M.

Abstract: A method and apparatus for detecting the presence or absence of an undesirable fluid, such as water, in a pipeline and for removing the undesirable fluid are disclosed. A detecting substance, for example, sugar, naphthalene or a pigmented solid is carried by a sweeping pig. The sweeping pig is inserted into the pipeline, propelled along the pipeline and recovered from the pipeline. The detecting substance is examined upon recovery of the sweeping pig to determine whether the undesirable fluid is present in the pipeline. The pipeline can be swept multiple times until examination of the detecting substance indicates that the undesirable fluid is not present in the pipeline.

Abstract: An internal combustion engine has an intake system (1) and an exhaust gas system (4). An exhaust turbocharger of the internal combustion engine has a compressor (42) arranged in the intake system (1) and a turbine (48) arranged in the exhaust gas system (4) of the internal combustion engine for driving the compressor (42). In order to diagnose the intake system (1), a charge pressure (PHS_AIC_DOWN) of the compressor (42) is determined in a predetermined operating state of the internal combustion engine. A leakage of the intake system (1) downstream of the compressor (42) is recognized if the determined charge pressure (PHS_AIC_DOWN) is lower than the predetermined base charge pressure (PUT_BAS) in the predetermined operating state.

Abstract: A method and apparatus for measuring the presence or absence of reaction between a first and second material of interest by measuring osmotic pressure changes in a reaction cell. The reaction cell is capable of measuring the small changes in pressure that occur due to osmotic pressure shifts during a catalytic or binding reaction at species concentrations down to approximately 10?7 M.

Abstract: 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. Thereafter, a pressure drop in the engine pressure is used to determine whether an oil seal leak may be present. Applying pressurized air to the EGR valve intake port compensates for EGR valve leakage and prevents the EGR valve leakage from masking possible oil seal leaks, thereby making the system more sensitive to such potential oil seal leaks.

Abstract: 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 detecting pressure on a detection port side. The valve includes a detection port connecting to a fuel tank side, an atmosphere port opened to atmosphere, a pressure chamber and a valve member displaceable in accordance with differential pressure between the detection port and the pressure chamber for connecting and disconnecting a connection between the detection port and the atmosphere port. The valve member disconnects between the detection port and the atmosphere port in a case where pressure of the pressure chamber becomes larger than pressure of the detection port by a predetermined pressure.

Abstract: A diaphragm is uniformly and finely deformed by compressed air supplied from an electro-pneumatic regulator, so that test fluid is supplied in conformity with the deformation of the diaphragm. In this way, a flow quantity of the test fluid supplied from a fluid supply device to a measurement passage is accurately adjusted. Therefore, an accuracy of a flow accuracy check device is improved, and a leakage measurement accuracy at the time of measuring a leakage from a fuel injection valve with a flow measurement apparatus is improved. At the time of measuring the leakage from the fuel injection valve, the diaphragm is stopped at a balanced position where a force of the air supplied from the regulator and a resilient force of the diaphragm is balanced. Therefore, a change in a volume of the measurement passage, which would be otherwise caused by movement of the diaphragm, does not occur.

Abstract: 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 detecting pressure on a detection port side. The valve includes a detection port connecting to a fuel tank side, an atmosphere port opened to atmosphere, a pressure chamber and a valve member displaceable in accordance with differential pressure between the detection port and the pressure chamber for connecting and disconnecting a connection between the detection port and the atmosphere port. The valve member disconnects between the detection port and the atmosphere port in a case where pressure of the pressure chamber becomes larger than pressure of the detection port by a predetermined pressure.

Abstract: After a reference pressure using a reference hole is measured, a pressure in an evaporation path is measured. An ECU conducts failure diagnosis using, as a determination pressure for diagnosing presence/absence of a failure, a value obtained by correcting the reference pressure using the reference hole in a manner lowering the same by a predetermined amount, taking into account pressure lowering in the evaporation path due to condensation of fuel vapor at the time of adsorption in a canister when a vapor concentration in the evaporation path is high.

Abstract: The present invention aims to provide apparatus and method for determining non-circular figure to drill boring holes having a regular N-polygonal cross sections while retaining the advantage of the turning operation. For boring a boring hole (H) with a cross-sectional shape of a regular N-polygon having vertexes of N in number, a boring tool (T) having a cross-sectional shape of a regular (N?1)-polygon which is inscribed on the regular N-polygon of the boring hole is driven to rotate at a certain rotational speed around its center (G) and revolve at a certain revolving speed along a circle (R) which is concentric to the boring hole center (0) and has a certain radius. The boring tool (T) may be replaced with a jet of fluid. A boring tool (T) with a regular (N+1)-polygonal contour may be used instead.

Abstract: A fluid volume measuring apparatus for measuring volume of fluid flowing out of a measured object includes a passage member that defines a measurement passage. The measurement passage is filled with fluid, which is capable of moving in the measurement passage in accordance with volume of fluid flowing out of the measured object. The fluid filled in the measurement passage forms a bubble. The passage member has a translucent portion in a predetermined measurement range, in which the bubble displaces in accordance with volume of fluid flowing out of the object to be measured. The translucent portion is formed of a translucent material. Volume of fluid, which flows out of the measured object, is measured in accordance with displacement of the bubble.

Abstract: A fluid flow control valve is provided with means for detecting and quantifying valve seat leakage when the valve is in its closed position. Any fluid leaking past the seat flows through an orifice of known, fixed dimensions present downstream of the seat when the valve is in its closed position. Pressure transducers measure a first pressure immediately upstream of the seat, a second pressure between the seat and the orifice, and a third pressure immediately downstream of the orifice. The second and third pressures are used to calculate flow through the orifice, and the calculated flow is used with the first and second pressures to determine the size of a leak path across the seat.

Abstract: In a process for the monitoring of leakage in the hydraulic pressure area of a membrane pump, processing is in a manner such that the point in time (t3), at which the snifting process serving for leakage compensation is initiated, is monitored continuously and compared with a reference value (t1), where a predetermined deviation (&Dgr;t1-t3) between two values (t3 and/or t1) triggers a leakage display.

Abstract: There is described herein a method and a device for determining leaks at the seal of a valve or a valve rod, in particular of a process valve so that an indication that the valve-rod seal needs changing can then be obtained in good time. In order to determine the leak, the pressure is determined, if appropriate as a function of time, in a control volume between a first valve-rod seal and a second valve-rod seal, and the leak flow rate is calculated therefrom.

Abstract: A control system for a gas sensor element capable of lessening the effect of variations in sensor properties among gas sensor elements as well as the effect of environmental factors, such as temperature and humidity, to thereby accurately detect variation in the concentration of a specific gas. In a control system 10 for a gas sensor element 11 whose sensor resistance Rs varies with the concentration of NOx gas, a pulse signal Sc which alternates between 0 V and +5 V is input to a pulse input terminal 17. When a voltage of 5 V is applied to the pulse input terminal 17, a capacitor 14 is charged via a fixed resistor 15 having a resistance Rc and a diode 16. When a voltage of 0 V is applied, the capacitor 14 discharges via the gas sensor element 11. An output voltage Vout is A/D-converted and processed by means of a microcomputer 20, thereby controlling an electronic control assembly 21.

Abstract: The present invention provides a malfunction diagnostic apparatus for an evaporated fuel purge system in an internal combustion engine, capable of detecting abnormalities such as looseness or clogging in the purge line between a purge valve and an engine intake passage. An electric pump 14 is turned on when a purge valve 5 is in a closed state and a selector valve 20 is in an open state. After the lapse of a given time period Tref, a load-current initial value I1 of the electric pump 14 is detected at the moment switching the selector valve 20 to a closed state. After the lapse of a given time period Tpump, the purge valve 5 is switched to an open state, and a load-current final value at the moment after the lapse of a given time period Tpurge. As in the curve A, when a load current final value I2A is equal to or less than the load current initial value I1, it is determined that the gaseous communication state in the purge line between the purge valve 5 and the intake passage is normal.

Abstract: A device and method for preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure relief of the headspace, and performs excess positive pressure relief of the headspace. The device includes a housing defining an interior chamber, a pressure operable device separating the interior chamber into first and second portions, and a device preventing resonance. The pressure operable device includes a poppet that is movable along an axis and a seal that is adapted to cooperatively engage the poppet. The device preventing resonance includes at least one of a dashpot defined by the housing and the poppet, a gap between the poppet and the seal, and a resilient element applying a force biasing the poppet toward the seal.

Abstract: A leak check system executes a leak check processing. In the leak check processing, the system closes a canister valve and a purge valve to close the fuel vapor purge system. Then, the system detects and monitors a pressure in the fuel vapor purge system. During the leak check processing, the system detects a rapid change of the pressure that is caused by a deformation of a wall of a fuel tank. The system cancels or suspends the processing to avoid erroneous detection of the leak. If the leak check is canceled, the system opens the canister valve to open the fuel vapor purge system.

Abstract: A diagnostic system for a valve (2) that can be actuated by a position controller via a drive. The diagnostic system includes a device (14) provided for recording, storing, and evaluating, body sound spectra on the valve. In order to enable a valve to be diagnosed in a particularly reliable manner, a body sound spectrum which is recorded when the intact valve (2) is slightly open is stored in the device (14) provided for recording, storing, and evaluating, whereby the valve can be closed for diagnostic purposes and the resemblance of the recorded body sound spectrum to the stored body sound spectrum is used as a criterion for evaluating a non-sealing condition of the valve.

Abstract: A fuel vapor treatment system is provided that diagnoses failure of the drain cut valve using one absolute pressure sensor. The fuel vapor treatment system includes a fuel tank, a canister, a drain cut valve, a purge valve, purge piping and a sensor. The canister adsorbs fuel vapor evaporated from the fuel tank. The drain cut valve controls the introduction of air into the canister. The purge valve is disposed between the canister and an intake passage into which fuel vapor flows from the canister. The purge piping communicates between the fuel tank and the intake passage via the canister. The sensor detects the absolute pressure inside the purge piping. The fuel vapor treatment system is further equipped with a failure diagnosis device that sets a reference pressure used for failure diagnosis of the drain cut valve while the purge valve is closed.

Abstract: A method and a device are described for monitoring a sensor, in particular a sensor for measuring a pressure variable which characterizes the pressure of the air supplied to the internal combustion engine. A fault is detected if a change in an operating variable that characterizes the quantity of fuel to be injected results in no corresponding change in the output variable of the sensor.

Abstract: The present invention provides a system for automatically shutting down a vehicle. The system includes a vehicle system for performing a vehicle function such as brakes for performing braking of the vehicle. A vehicle control system controls the vehicle system by controlling valve switches or actuators to manipulate the vehicle system. A portable handheld computing device includes a program defining a vehicle shutdown sequence. Preferably, the portable handheld computing device is what is known as a personal digital assistant (PDA), such as a Handspring® or Palmpilot®. A cradle removably receives the portable handheld computing device to connect the portable handheld computing device with the vehicle control system, such as through the vehicle databus. A switch enables the portable handheld computing device to command the vehicle control system to perform the vehicle shutdown sequence.

Abstract: A method for testing an internal combustion engine for assembly and manufacturing faults. In methods of this type, the torque of an electric traction motor has hitherto been determined, specific torque values being an indication of faulty engines. So that the procedure can be carried out without the complicated torque measurement, during the traction movement an air volume entering a crankcase ventilation system is measured. The measurement value is compared with desired values of a fault-free internal combustion engine and assembly and/or manufacturing faults are inferred from deviations.

Abstract: An arrangement for exercising (or burnishing) the intake and exhaust valves in the cylinder head of an internal combustion engine employs a plurality of out-of-phase eccentric cams coupled to a source of rotatory motion. The eccentric cams engage with respective linear drive arrangements that are urged into out-of-phase reciprocation with respect to each other. The linear drives urge the valves into repeated open and closed states where, in combination with valve rotators, burnishing of the sealing portion of the valves with the valves seats to improve the seal therebetween is effected. The use of eccentric cams to effect linear reciprocating motion achieves control over both directions of movement of the linear drive arrangements. The cylinder head is maintained in fixed relation to the linear drive arrangements by a hydraulic, pneumatic, or other form of ram, the ram also creating a test chamber.

Abstract: A fluid leak finder device for a vehicle for finding oil leaks preferably in an engine of a vehicle. The fluid leak finder device for a vehicle includes an air-regulating container having top, bottom, and side walls; and also includes a plurality of conduits being disposed in the air-regulating container and being interconnected; and further includes a plurality of coupler assemblies being disposed through the walls of the air-regulating container and being connected to the conduits; and also includes an air pressure valve assembly being disposed through one of the walls of the air-regulating container and being disposed in an intersection of the conduits; and further includes an air pressure gauge being connected to one of the coupler assemblies for setting air pressure through the conduits; and also includes a hose assembly including a hose member being connected to another one of coupler assemblies and being adapted to supply compressed air to a part of a vehicle such as an engine block.