Abstract: An engine powertrain control device is configured to reduce data amounts of characteristics of a torque converter and realize torque estimation with high accuracy. A device detects or computes rotating speeds of input and output shafts of the torque converter. A device computes a ratio (speed ratio) between the rotating speed of the input shaft and the rotating speed of the output shaft of the torque converter. A device stores data of a pump capacity coefficient and torque ratio product of the torque converter and computes a value of the product corresponding to a value of the speed ratio computed above, and a device is provided for computing an output shaft torque of the torque converter by using the value of the computed product.

Abstract: A power train controller and control method are provided for a passenger car driven by a combustion engine and an automatic gear changing transmission. Control sensors detect a current operating state of the passenger car. Three different modes of operation, including sports mode, economy mode, and comfortable mode are selected by the driver. Depending on the selected mode, the automobile transmission is controlled in different shifting patterns as a function of the sensed vehicle operating conditions.

Abstract: In an engine system, an ignition timing is changed in accordance with operation parameters of an engine. The engine system includes an exhaust gas clarifying equipment with a catalyst to clarify the specified components in the exhaust gas, catalyst temperature detecting unit for estimating or detecting the temperature of the catalyst, torque fluctuation detecting unit for detecting the state of fluctuation of an output torque of the engine, and ignition timing calculating unit for calculating the final ignition timing on the basis of the detected results of the torque fluctuation detecting unit and the catalyst temperature detecting unit.

Abstract: A rear derailleur for a bicycle is disclosed herein which basically includes a derailleur body which is coupled to the frame of a bicycle via a bracket axle assembly, and a chain guide assembly which is movably coupled to the derailleur body and engages the chain for moving the chain between the rear gears or sprockets. The bracket axle assembly includes a fixing bolt for pivotally securing the derailleur body to the frame of the bicycle. The bracket axle assembly also includes a torsion spring and a stop plate for controlling the rotational movement of the derailleur body relative to the frame and for normally biasing the derailleur body in a clockwise direction. A retaining assembly having a locking ring and a fixing member is utilized for maintaining the torsion spring and the stopper plate in the desired position on the shaft of the fixing bolt. The locking ring is preferably a two-piece construction and includes first and second substantially identical portions.

Abstract: A change gear control device is provided for an automatic transmission in a motor vehicle propelled by an internal combustion engine which is operated with an air/fuel mixture having air/fuel ratios ranging from a fuel rich air/fuel ratio to a fuel lean air/fuel ratio depending on driving conditions of the motor vehicle. In this device a first detector detects an engine torque of the internal combustion engine and a second detector detects a vehicle speed of the motor vehicle. A processor processes transmission gear ratios for the automatic transmission.

Abstract: A vehicle control unit comprises an interface software memory for storing an interface software program for connecting an application software program with an operating system in an internal ROM, a central processing unit for performing computation of the application software program and the interface result of computation, an I/O unit for extending the control unit, and extending means for communicating memory data through a bus of a LAN. A single-chip micro-computer is used in vehicle control.

Abstract: A power train controller and control method are provided for a passenger car driven by a combustion engine and an automatic gear changing transmission. Control sensors detect a current operating state of the passenger car. Three different modes of operation, including sports mode, economy mode, and comfortable mode are selected by the driver. Depending on the selected mode, the automobile transmission is controlled in different shifting patterns as a function of the sensed vehicle operating conditions.

Abstract: A control apparatus for a multicylinder direct injection engine includes a fuel injection valve installed at each cylinder, a secondary intake air flow path provided for generating a slewing flow of intake air taken in an intake pipe, and a gas flow control valve for controlling the slewing flow generated in each cylinder by adjusting the flow rate of air flowing through the secondary intake air flow path. The control apparatus further includes an air/fuel controller for controlling the air/fuel control ratio in each cylinder by controlling fuel injection amount without using the opening of the gas flow control valve in the respective cylinder, for a first operational region of a small amount of accelerator operation.

Abstract: A control unit 15 of an air/fuel ratio control apparatus according to the present invention takes in signals output from various sensors detecting operational states of an engine, and controls the fuel injection amount and the ignition timing by executing the predetermined processing by using the taken-in signals, and outputting control signals obtained by the processing to each injector and an ignition coil connected to each ignition plug. Further, the amount to be injected in each cylinder is corrected, based on the integration value of fuel pressure changes detected by the fuel pressure sensor, on the basis of the found fact that the integration value of the fuel pressure changes for each cylinder well corresponds to the amount actually injected into the cylinder.

Abstract: A signal detector is located before an automatic transmission for detecting timing such that torque outputted from a torque converter of the automatic transmission at the moment of upshifting changes from clutch before shift to clutch after shift. A signal detector is located after the automatic transmission for detecting timing such that torque outputted from a torque converter of said automatic transmission at the moment of downshifting changes from clutch before shift to clutch after shift. An apparatus executes the driving shaft torque control in response to the changes in both torque signal detectors.

Abstract: In a multi-cylinder engine, amounts of fuel injection supplied to respective cylinders are individually corrected on the basis of a signal from A/F sensors in the number less than the number of cylinders of the engine, for example, one A/F sensor, so that the air/fuel ratios for respective cylinders are feedback-controlled at a substantially uniform predetermined air/fuel ratio. Therefore, it is possible to perform precise air/fuel ratio control so as to accurately maintain the air/fuel ratio of the engine at the stoichiometric air/fuel ratio, to reduce the concentrations of HC, CO, and NOx in exhaust gas.

Abstract: A change gear control device is provided for an automatic transmission in a motor vehicle propelled by an internal combustion engine which is operated with an air/fuel mixture having air/fuel ratios ranging from a fuel rich air/fuel ratio to a fuel lean air/fuel ratio depending on driving conditions of the motor vehicle. In this device a first detector detects an engine torque of the internal combustion engine and a second detector detects a vehicle speed of the motor vehicle. A processor processes transmission gear ratios for the automatic transmission.

Abstract: A vehicle control unit comprises an interface software memory for storing an interface software program for connecting an application software program with an operating system in an internal ROM, a central processing unit for performing computation of the application software program and the interface software program, an erasable memory for storing data such as the result of computation, an I/O unit for extending the control unit, and extending means for communicating memory data through a bus or a LAN. A single-chip micro-computer is used in vehicle control.

Abstract: A power train controller and control method are provided for a passenger car driven by a combustion engine and an automatic gear changing transmission. Control sensors detect a current operating state of the passenger car. Three different modes of operation, including sports mode, economy mode, and comfortable mode are selected by the driver. Depending on the selected mode, the automobile transmission is controlled in different shifting patterns as a function of the sensed vehicle operating conditions.

Abstract: A change gear control device is provided for an automatic transmission in a motor vehicle propelled by an internal combustion engine which is operated with an air/fuel mixture having air/fuel ratios ranging from a fuel rich air/fuel ratio to a fuel lean air/fuel ratio depending on driving conditions of the motor vehicle. In this device a first detector detects an engine torque of the internal combustion engine and a second detector detects a vehicle speed of the motor vehicle. A processor processes transmission gear ratios for the automatic transmission.

Abstract: A control unit for vehicle is provided where an increase in a number of input/output and upgrading functions can easily be performed and, in addition to this, changing of a program in a control unit can easily be performed even when a single-chip micro-computer is used. A control unit is constructed such as to comprise an interface software memory storing an interface software program for connecting an application software program with an operating system in an internal ROM, a CPU for performing computation of the application software program and the interface software program, a RAM storing data such as the result of the computation, an I/O unit for extending the control unit, and an extending device for communicating memory data through a bus or a LAN. A single-chip micro-computer used in vehicle control can easily cope with an increase in the input/output ports or additional functions, and an application software program can continuously be used only by rewriting an interface software program.

Abstract: A change gear control device is provided for an automatic transmission in a motor vehicle propelled by an internal combustion engine which is operated with an air/fuel mixture having air/fuel ratios ranging from a fuel rich air/fuel ratio to a fuel lean air/fuel ratio depending on driving conditions of the motor vehicle. In this device a first detector detects an engine torque of the internal combustion engine and a second detector detects a vehicle speed of the motor vehicle. A processor processes transmission gear ratios for the automatic transmission.

Abstract: A control section detects terminal voltage of a battery periodically and stores it in a memory, then calculates the most recent gradient and average gradient of a charging curve from the storage contents. When the most recent gradient becomes greater than the average gradient by a predetermined value or more, the control section judges it to be the last stage of the charging. After this, the control section compares the most recent terminal voltage with the preceding terminal voltage which are detected and stored in sequence. When they become equal to each other, the control section turns off a charge switch for terminating the charging. Thus, a rise in the terminal voltage at the last stage of the charging is detected securely and the subsequent peak is detected accurately.

Abstract: The present invention relates to a magnetic recording/reproduction device (such as VTRs and DATs). A cue signal becomes a mark of its position for automatic operation and automatic editing and is to be recorded in advance with the contents of a program. The frequency of the cue signal is selected within the audio signal band. On an auxiliary audio track (24) in a magnetic tape (21), an audio signal as well as a cue signal is recorded in time division manner. Determination is made of a correct cue signal by providing a mute period before the cue signal recording region and detecting a cue signal by a filter after the detection of a mute period. The frequency ratio of the cue signal to control signal (CTL) is determined by a counter (6) with a CPU (7) being used to identify a cue signal in response to the frequency ratio. By dividing the reproduced signal into blocks, the cue signal is detected from the cycle number distribution of the frequency.

Abstract: A change gear control device for an automatic transmission in a motor vehicle comprising, an acceleration sensor which detects an acceleration on the motor vehicle into its traveling direction; a vehicle traveling speed detector; a controller for processing change gear ratio for the automatic transmission which reads a detected acceleration from the acceleration sensor, a detected vehicle traveling speed and further the instant transmission gear ratio from the automatic transmission, calculates an engine torque based upon the acceleration and the instant transmission gear ratio, determines a new transmission gear ratio based upon the calculated engine torque and the vehicle traveling speed, and outputs a signal representing the new transmission gear ratio to the automatic transmission; a further acceleration sensor which detects an acceleration acting on the motor vehicle in its lateral direction; and an arrangement for inhibiting the signal representing the new transmission gear ratio from the change gear ra