Abstract: An engine control system, which is adaptable for individual differences among engines, changes with time, environmental changes, etc., and which can control engine torque with high accuracy and high response. The engine control system comprises a unit for detecting engine torque in at least one of direct and indirect manners, a unit for computing an engine control parameter, and a unit for modifying the engine control parameter based on the detected torque detected by the engine torque detecting unit.

Abstract: In an vehicle-mounted engine control apparatus according to the present invention, a restart inspection means, which is simpler than an activation inspection means, is provided, and a means to be applied is selected by an initialization determination means. The contents of the restart inspection are limited to malfunction items detected by a periodic code inspection means during driving of the vehicle. As a result, the time that is required to restart a microprocessor when a malfunction occurs is shortened.

Abstract: A method to operate an internal combustion engine by derating the engine in response to sensed emissions levels as compared to engine speed and engine torque and logging a fault.

Abstract: An exhaust gas diagnosis system and a vehicle control system for automotive vehicles to reduce the communication lines and the power lines connected to the antiweatherability-required exhaust gas sensor arranged on the exterior of the vehicle are disclosed. The exhaust gas diagnosis system is configured of an engine control unit (electronic control unit), radio terminal units having the sensor function to detect the exhaust gas, and a radio communication repeater to conduct communication and share a part of the process executed by the conventional engine control unit. The communication lines between the sensor and the electronic control unit and the power lines to the sensor required in the conventional systems are eliminated while at the same time reducing the load on the electronic control unit.

Abstract: A notification system for a vehicle includes at least a first and a second power source. The notification system also includes a controller that is operable with the first and second power sources and is configured to determine operating modes of the first and second power sources. The controller is also adapted to generate signals that correspond to the operating modes and operating limitations of the vehicle to effect an audible indication in the form of a voice message that may include a vehicle system limitation message for a vehicle operator.

Abstract: A method assesses the functional capability of a gas exchange valve lift adjuster of an internal combustion engine as a function of a measure of rotational oscillation amplitudes of a camshaft. The measure of the rotational oscillation amplitudes is formed repeatedly. In a situation in which the gas exchange valve lift adjuster is to change the valve lift, it is checked whether a change in the measure of the rotational oscillation amplitudes occurs. The gas exchange valve lift adjuster is assessed as being functional if a measure for the change is greater than a predetermined threshold value. A control unit is programmed to perform such steps.

Abstract: A method of achieving a desired engine speed of an internal combustion engine includes determining the desired engine speed, calculating a slow response torque value based on the desired engine speed and calculating a fast response torque value based on the desired engine speed. A slow response actuator command and a fast response actuator command are generated based on the slow response torque value and the fast response torque value, respectively. Operation of the engine is regulated based on the slow response actuator command and the fast response actuator command to achieve the desired engine speed.

Abstract: A method for operating an internal combustion engine having a first fuel injection system for injecting fuel into a combustion chamber of a cylinder of the internal combustion engine, and having a second fuel injection system for intake manifold injection, an injected fuel mass being corrected for the adaptation of an air/fuel mixture ratio; and at least one first adaptation value for the first fuel injection system being used and at least one second adaptation value for the second fuel injection system being used. The first and the second adaptation value are evaluated in order to conclude whether there is an error in an air system of the internal combustion engine.

Abstract: An estimated quantity of soot deposited near a movable part of a variable capacity mechanism and an estimated quantity of soot burnt off therefrom are determined in advance in accordance with values of parameters (engine rotation speed or similar) that express the engine operating condition, and stored in storage means. Then actual values of the parameter are measured, and an estimated deposition quantity Sa and an estimated burn off quantity Sb corresponding to the measured values are determined from the storage means. An estimated remaining quantity of soot Kn is determined by obtaining the difference between the estimated deposition quantity and the estimated burn off quantity, and a movable vane is forcibly driven to open and close in accordance with the estimated remaining quantity Kn.

Abstract: In the case where predetermined abnormality detection performed with operation of an engine, such as abnormality detection of a fuel system and an ignition system of the engine and various sensors, has not been completed (in the case where an abnormality detection completion flag F is zero), self-sustaining operation of the engine is performed to continue the operation (S280) when the engine is being operated and a power demand Pe* of the engine is less than a threshold Pstop1 for stopping the operation of the engine in normal time (S130) but is a threshold Pstop2 or more smaller than the threshold Pstop1 (S200 and S210), and the engine is started when the engine is not being operated and the power demand Pe* is a threshold Pstart2 or more smaller than a threshold Pstart1 for starting the engine in normal time (S310 and S320). This ensures performance of the predetermined abnormality detection.

Abstract: A plug of a power cord of a block heater which is mounted to a cylinder block of an engine, is connected to a household power receptacle to energize the block heater during an engine stoppage in cold climate. Thus, an engine coolant is kept warm to prevent freeze. Existence/nonexistence of the energization to the block heater during the engine stoppage is determined based on a behavior of coolant temperature or a behavior of engine rotation speed immediately after an engine start. If it is determined that the energization to the block heater exists, abnormality diagnosis of a cooling system is prohibited or a condition for the abnormality diagnosis is corrected and estimation coolant temperature is corrected.

Abstract: An apparatus for remote identification of combustion performance of a vehicle is provided. The apparatus comprises a vehicle with a throttle device for control of fuel into a multiple cylinder engine of the vehicle. A sensor is provided in operative communication with the vehicle for the purpose of analyzing a vehicle combustion parameter, wherein the sensor can sense combustion of at least one cylinder of the engine. A remote communication device is provided in operative communication with the combustion sensor for communicating the combustion parameter. A remote monitoring network is provided for receiving the combustion parameter from the remote communication device over a network to enable remote monitoring of vehicle performance.

Abstract: An apparatus for failure diagnosis of an intake air flow sensor is provided which, when the operating state of an engine is judged to be in a low flow rate region, determines whether or not the intake air flow rate detected by the intake air flow sensor is excessively high relative to a theoretical intake air flow rate corresponding to the operating state of the engine and, if the detected intake air flow rate is excessively high, judges that the intake air flow sensor has failed. Also, when the operating state of the engine is judged to be in a high flow rate region, the apparatus for failure diagnosis determines whether or not the detected intake air flow rate is excessively low relative to the theoretical intake air flow rate and, if the detected intake air flow rate is excessively low, judges that the intake air flow sensor has failed.

Abstract: A method to determine degradation of a humidity sensor used for controlling an engine of a vehicle, the humidity sensor exterior to a passenger compartment of the vehicle, the method comprising determining whether to enable monitoring of the sensor based on a duration since vehicle operation; and in response to a determination to enable monitoring, comparing a signal from a second humidity sensor to a signal from the humidity sensor exterior to said passenger compartment of the vehicle to determine whether either of sensors has degraded.

Abstract: A diagnostic apparatus for an internal combustion engine is disclosed herein. In one embodiment, the diagnostic apparatus comprises a catalytic converter and a controller. The catalytic converter is disposed in an exhaust passage of an engine and treats an exhaust gas component in the exhaust gas. The controller is adapted to perform a number of functions. More specifically, the controller is adapted to operate the engine with an engine control parameter to increase catalyst temperature of the catalytic converter during a cold engine condition. The controller is further adapted to calculate a temperature factor indicative to temperature increase of the catalyst based on the engine control parameter. The controller is further adapted to estimate the amount of the exhaust gas component flowing out of the catalytic converter based on the temperature factor.

Abstract: A diagnostic control system for an internal combustion engine including a discrete variable valve lift (DVVL) system includes a first module that determines a knock threshold value based on engine operating parameters and an engine knock sensor that generates a knock signal. A second module monitors a portion of the knock signal that is associated with a particular cylinder of the engine, selectively identifies a fault of at least one valve of the DVVL system associated with the particular cylinder based on the portion and the knock threshold, and outputs a fault signal corresponding to the particular cylinder.

Abstract: There is provided a method and system for monitoring an intake air filter for an internal combustion engine of a hybrid powertrain operative to transmit an output torque to a driveline. The engine has a controllable throttle valve. The method comprises determining a first pressure state comprising an ambient barometric pressure. A second pressure state is determined downstream of the air filter during engine operation at a high flow engine operating point. The hybrid powertrain is controlled to maintain the transmitted output torque to the driveline. The first and second pressure states are compared.

Abstract: For the purposes of a determination of a fuel vapor loading level of a fuel vapor retention system of a combustion engine, an opening level of a valve of the fuel vapor retention system is increased in steps or continuously during a determination phase. Furthermore, the valve is activated at most a predefined first period prior to a start of the determination phase by a conditioning pulse at least whenever the valve was closed previously for a second period that is longer than a predefined threshold value. The conditioning pulse is generated in such a way that the valve definitely opens at most for a predefined opening period and then closes again.

Abstract: An engine exhaust sensor diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor includes a first module that calculates a total integrated area based on a signal generated by the post-catalyst oxygen sensor. A second module compares the total integrated area to a threshold integrated area and generates a pass status signal when the total integrated area is less than the threshold integrated area.

Abstract: A method for controlling exhaust gas particulate emissions from a compression ignition internal combustion engine having a variable geometry turbocharger (VGT) includes the steps of determining backpressure across the engine and air mass flow into the engine, closing vanes of the VGT to provide air mass flow increase when backpressure is increasing, and stopping the step of closing the vanes of the VGT when a decrease in rate of change of air mass flow is determined.

Abstract: Disclosed is an internal combustion engine comprising at least one cylinder and an exhaust manifold in which a catalytic converter, a first exhaust gas probe, and a second exhaust gas probe are disposed. The first exhaust probe is located upstream from the catalytic converter while the second exhaust gas probe is arranged downstream therefrom. A lambda Controller is provided which is configured so as to determine a lambda correction factor in accordance with a first test signal that is assigned to the first exhaust gas probe. A trim controller is provided to which a setpoint value and an actual value of a second test signal allocated to the second exhaust gas probe are fed as a control difference. The trim controller is configured so as to determine a proportionate corrective factor.

Abstract: The invention relates to a method for controlling the air flow quantity supplied to an internal combustion engine per operating cycle, without reducing the throttle. The method is characterized in that: an accelerator pedal signal (?) is detected, the value thereof depending on the position of the accelerator pedal; a rotational speed signal (n) is detected the value thereof depending on the rotational speed of the internal combustion engine; load collectives are formed from (?) and (n); both the load collective-dependent opening time (tLi) of a gas outlet in the compression chamber of each cylinder of the internal combustion engine during the compression stroke, and the load collective-dependent fuel injection quantities (˜tLi) per operating cycle and cylinder are determined; and the advance angles are determined according to the load collectives. The inventive method is advantageous in that only negligible fluctuations occur in the respectively introduced air flow quantity over all load regions.

Abstract: A device and a method for determining the trouble of a cylinder pressure sensor. The device accurately detecting the trouble of the cylinder sensor without increasing cost calculates the cylinder pressure of an internal combustion engine based on an output from the cylinder sensor installed in the internal combustion engine and calculates a drift parameter indicating the drift amount of the cylinder pressure based on the cylinder pressure. When the drift parameter is not within a specified range, the device determines that the cylinder pressure sensor is defective. According to one embodiment, the specified range can be set based on the behavior of the cylinder pressure. According to the other embodiment, a correction factor is obtained according to the operating state of the internal combustion engine, and the drift parameter is corrected with the correction factor.

Abstract: A portable memory device used in substitution of an automobile key and interfaced with an automobile onboard computer and ignition system. The portable memory device contains data that, when read by the onboard computer, enables the ignition system. The portable memory device is read and write capable, thereby allowing for data to be used by the onboard computer in conjunction with several automobile systems, and allowing for data to be transferred from said systems to the portable memory device by the onboard computer, thus facilitating a method for managing a transportation fleet using portable memory devices in place of mechanical ignition keys and manual check-out and check-in procedures.

Abstract: A method for performing application review validation testing for an engine as installed in an application, the engine having production sensors and a production electronic control unit (ECU) for controlling the engine using the production sensors, includes running the engine; reading an output of the production sensors with the production ECU during the running of the engine; and determining with the production ECU whether the engine as installed in the application is in compliance with at least one requirement of the application review validation testing based on the output.

Abstract: In an apparatus for controlling an engine, an abnormality determining unit determines whether the crank signal is abnormal based on a state of a input signal for an interval measuring unit. The interval measuring unit measures a time interval from when a predetermined-directed level change appears in the input signal and a temporally next predetermined-directed level change appears therein. An input unit switches the input signal for the interval measuring unit from a crank signal to a cam signal when it is determined that the crank signal is abnormal. The crank signal has a level that repetitively changes in a predetermined direction each time the crankshaft rotates by a first angle. The cam signal has a level that repetitively changes in time in a predetermined direction each time the camshaft rotates at least by a second angle different from the first angle.

Abstract: 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 pressure states corresponding to the engine crank position during compression and expansion. Pressure ratios are determined based upon the instantaneous in-cylinder pressure states. A combustion heat release is determined based upon the pressure ratios. An aspect of the invention comprises extending the operation to diesel, diesel premixed and to HCCI engines.

Abstract: The invention relates to a method for the cylinder-selective control of an air/fuel mixture to be burnt in a multi-cylinder internal combustion engine, in which the lambda values for different cylinders or groups of cylinders are separately sensed and controlled, and also relates to a multi-cylinder internal engine suitable for carrying out the method. In accordance with the invention, the lambda values of the individual cylinders or groups of cylinders are simultaneously controlled to different required values using an integrating I-control proportion with variable integrator slope and/or a differentiating D-control proportion.

Abstract: The invention relates to a standby lubrication method for an engine 1 in the event of the failure of a main lubrication system 2 of this engine 1, in which said failure is detected and, in response to the detection of this failure, at least one portion of a fuel fluid of the engine 1 is tapped off to lubricate at least one element of the engine 1. The invention also relates to a standby lubrication device 6 for an engine 1 comprising a main lubrication system 2, said standby lubrication device 6 comprising means for detecting a failure of the main lubrication system 2, means 12 for tapping off at least a portion of a fuel fluid of the engine 1 in order to direct it to at least one element of the engine 1 intended to be lubricated, and control means 15 capable of being connected to said tapping and detection means 12, in order to carry out the standby lubrication method.

Abstract: A temperature sensor is disposed at a position upstream of a throttle shaft in the flow channel so as not to contact the throttle valve. An inlet of a guiding path in the flow channel is arranged downstream of a first half part of the throttle valve that is revolved in an upstream direction when the throttle valve is revolved in an opening direction, the guiding path guiding a pressure to the pressure sensor. A first screw which attaches the sensor unit to the throttle body is disposed at a position upstream of a half part. A second screw is disposed at a position downstream of the other half part. A detected temperature of intake air is corrected to a temperature of intake air detected near an air cleaner.

Abstract: A method of statistically characterizing combustion knock events includes receiving signals from a sensing device such as an accelerometer, estimating at least one parameter of a probability distribution function based on the received signals, and calculating a value indicative of an nth percentile based on the parameter to predict upcoming combustion knock events.

Abstract: The present invention relates to a method for detecting an angular position signal representing the rotary motion of a rotating part of an internal-combustion engine. The internal-combustion engine includes at least one combustion chamber. In addition, a speed sensor of the type mentioned initially is provided, the speed sensor outputting a rotation-measurement signal representing the rotary motion of a sensing wheel connected with the rotating part. At least one pressure sensor is also provided that outputs a pressure signal representing the pressure in a combustion chamber. The method according to the present invention has the following steps: Detect the pressure signal, detect the rotation-measurement signal, calculate a correction quantity that is a function, at the least, of the detected pressure signal and rotation-measurement signal, and determine the angular position signal by linking the detected rotation-measurement signal with the correction quantity.

Abstract: A Calibrated Air Intake Tract for Internal Combustion Engine is disclosed. The intake includes a Mass Airflow Sensor section that defines an inner diameter that differs from the diameter of the overall intake air tract piping. The Mass Airflow Sensor length and diameter are precision-tuned in order to provide the best engine performance without the typical “check engine” light being lit due to faulty mass airflow sensor readings. In those vehicles where necessary, an insert of the appropriate size and in the proper location is added to the interior wall of the MAFS section in order to correct final fuel trim level inadequacies.

Abstract: A control system for a fuel delivery system provides enhanced functionality and diagnostic capabilities relative to known systems. In accordance with one aspect of the invention, enhanced functionality and diagnostic capability is provided by integrating the pump controller and the tank gauge by way of a control or integration unit. The control unit includes a microprocessor and communication hardware for communicating with the tank gauge and the pump controllers. In accordance with alternate embodiments of the invention, a control unit is included which provides additional functionality, such as automatic logging of controller faults.

Abstract: An individual-cylinder air-fuel ratio estimation model is designed so as to consider the mixing of gases exhausted from adjacent combustion cylinders, and a movement by which a mixed gas arrives at the position of an air-fuel ratio sensor, in order that influences ascribable to the intervals (combustion intervals) of the adjacent combustion cylinders may be reflected on the estimation values of individual-cylinder air-fuel ratios. In evaluating the mixing of the gases which are exhausted from the adjacent combustion cylinders, there are considered the lengths and shapes of the exhaust manifolds of the respective combustion cylinders. In evaluating the movement by which the mixed gas arrives at the position of the air-fuel ratio sensor, there are considered a distance or volume from the confluence to the position of the air-fuel ratio sensor, and the exhaust gas quantities of the respective combustion cylinders.

Abstract: An engine protection system and protocol is implemented within an electronic control module. Various engine parameters, such as engine coolant level, coolant temperature, transmission fluid temperature, and engine oil pressure are monitored and compared to limit values to determine if a fault condition exists as to one or more of the parameters. The engine protection system includes visual and audible signals responsive to the parameters. An engine disabling mechanism is operative when any of the aforementioned parameters exceed predetermined limits for a predeterminable period. The electronic control module contains a memory function for recording the fault parameters as well as other identifying information. The electronic control module also includes an engine idle limiter feature. The engine disabling means is operative when the vehicle idling duration exceeds a second predeterminable period.

Abstract: In a filtering apparatus, an analog filter filters a measured analog signal based on a predetermined filtering characteristic. An A/D converter converts, at constant time intervals, the filtered analog signal into a train of digital samples. A storage unit has a memory and stores, in the memory, the converted digital samples in the order from a first-converted digital sample in the train to a last-converted digital sample therein. A digital filtering unit has a second filtering characteristic substantially identical to the first filtering characteristic of the analog filter. The digital filtering unit reads out, from the memory, the digital samples in the order from the last-converted digital sample to the first-converted digital sample. The digital filtering unit filters the readout digital samples based on the second filtering characteristic in the order from the last-converted digital sample to the first-converted digital sample.

Abstract: A method of calculating the amount of work done by an internal combustion engine, which is capable of calculating a work amount parameter indicative of the amount of work done with accuracy while compensating for a phase delay in in-cylinder pressure data caused e.g. by a filtering process performed thereon. The method calculates the work amount parameter Pmi indicative of the amount of work done by the engine 3 including a combustion chamber 3b, as follows: Pressure in the combustion chamber 3b is detected to obtain in-cylinder pressure data P indicative of the detected pressure. Volume data V indicative of a state of change in volume of the combustion chamber 3b is obtained. The obtained volume data V is subjected to a first predetermined filtering process. The work amount parameter Pmi is calculated based on the detected in-cylinder pressure data P, and the volume data filtered value VF obtained by subjecting the volume data V to the first filtering process.

Abstract: Unless an abnormality exists in piping introducing a pressure from front and rear of DPF 22 into a differential pressure sensor 45, pulsations of pressure propagation through an exhaust passage 21 is offset in a detection value of a pressure difference of the differential pressure sensor 45, and an amplitude of the detection value of the DPF pressure difference resulting from pulsation of the pressure becomes small. If a crack exists in one of the piping 3a and 3b, the influence of a pulsation of the pressure appears in the DPF pressure difference and the amplitude of the detection value of the DPF pressure difference becomes large. The amplitude of the detection value of the DPF pressure difference is compared with the reference value and is detected as being abnormal when it is large, utilizing the phenomenon described above.

Abstract: A fault code memory manager architecture for heavy duty diesel engines consisting of a dedicated monitoring unit module and at least one fault code memory manager administrator module.

Abstract: A soot accumulation amount estimation method for an exhaust gas purification filter according to the present invention includes: a first step of burning soot collected in pores of the exhaust gas purification filter to regenerate the filter; a second step of detecting a temperature of exhaust gas flowing into the filter, to judge whether or not the exhaust gas temperature is equal to or lower than a predetermined temperature at which a soot amount flowing into the filter is substantially equal to a soot amount to be burnt in the filter; a third step of adding up a period of time during which the exhaust gas temperature is equal to or lower than the predetermined temperature, when the exhaust gas temperature is equal to or lower than the predetermined temperature; a fourth step of judging whether or not the added up period of time is equal to or longer than a period of time during which a predetermined amount of soot is accumulated in the pores after the first step; and a fifth step of estimating a soot accumu

Abstract: A method to operate an electronic controlled diesel engine to provide enhanced fault code administration responsive to the variable driving cycle.

Abstract: The system (CVT) includes a first electrical machine (M1) with a first rotor (R1) provided with a multiphase winding (W1) and fixed firmly to the shaft (1) of the internal combustion engine (ICE) and a second rotor (R2) or intermediate rotor coaxial with the first rotor (R1) and carrying first magnetic means (PM1) operatively cooperating with the winding (W1) of the first rotor (R1), the intermediate rotor (R2) being coupled with at least one axle (2) of the motor vehicle, and a second rotary electrical machine (M2) coaxial with the first (M1) and including a stator (ST), which is arranged on the opposite side of the intermediate rotor (R2) to the first rotor (R1) and is provided with a multiphase winding (W2), as well as the intermediate rotor (R2) which also carries second magnetic means operatively cooperating with the winding (W2) of the stator (ST), a first inverter and a second inverter (I1, I2) of which the a.c.

Abstract: A signal transfer system for regulating operation of an internal combustion engine includes a shaft that is rotatably driven within an engine. A sensor is responsive to the rotation of the shaft and generates a data signal based on the rotation. A communications bus receives the data signal and generates a replicated data signal based. A first control module receives the replicated data signal and regulates operation of the vehicle based on the replicated data signal.

Abstract: In an engine output control apparatus of a power train employing an engine and an automatic transmission, capable of executing engine output control for excessive torque input prevention engine torque limiting action and for a shift speed control of the transmission, at least two different kinds of engine output control systems having control characteristics differing from each other, are provided. A controller selectively uses these engine output control systems depending on a power-train operating condition, such that a first one of the engine output control systems having a superior transient response is used for the engine output control for shift response control during shifting, and that a second one of the engine output control systems having a superior steady-state stability is used for the engine output control for excessive torque input prevention engine torque limiting action during non-shifting.

Abstract: A control system for a machine having an engine is disclosed. The engine has a first electronic governor. The first electronic governor is operable to control the engine. The engine also has a memory including predetermined configuration data. The engine also has a second electronic governor. The second electronic governor is operable to control the engine. The second electronic governor is connected to the first electronic governor via a datalink. The second electronic governor is configured to automatically receive the predetermined configuration data from the first electronic governor.

Abstract: A method for operating an internal combustion engine enables an improved determination of a preferred position of a shaft of the internal combustion engine. The preferred position of the shaft is derived here on the basis of a signal characterizing a course of combustion of the internal combustion engine as a function of a phase relation determined between this signal and the preferred position of the shaft.

Abstract: 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 estimating a second ICT based on a previously estimated second ICT and a currently measured MAF. An IAT difference is determined based on the first ICT and the second ICT. Whether the fault condition of the IAT sensor is present is determined based on the IAT difference.

Abstract: The invention relates to a diagnosis method for an exhaust gas post-treatment system for the reduction of nitric oxides in the exhaust gas train of an internal combustion engine by means of selective catalytic reduction.

Abstract: A Calibration Method for Air Intake Tracts for Internal Combustion Engines is disclosed. The method tunes the replacement cold air intake so that the Original Equipment Mass Airflow Sensor will function with the emissions control system without check engine light illumination. The method uses the exhaust effluent composition to benchmark the OEM intake system and then to match the cold air intake to that benchmark test result. The method could use the exhaust effluent composition for calibration as well as verification, or the method could use Sensor signal output for calibration and then exhaust effluent composition for verification of the design specification.