Abstract: Positive charges of a sensor element are stored in a capacitor for converting a voltage, are converted into a positive voltage by an amplifier, and then are outputted. When the polarity of the charges of the sensor element are inverted to be negative, the charges inversely flow from the capacitor for converting the voltage and feed back to an equivalent capacitor of the sensor element. The output of the amplifier reduces and returns to a zero-point. An automatic correcting circuit makes an FET conductive and the charges are discharged in order to prevent the fluctuation of the zero-point level due to the negative drift.

Abstract: A combustion-pressure-data acquisition system of a multi-cylinder engine according to the present invention includes an in-cylinder pressure sensor CPS#n for directly detecting combustion pressure in each cylinder; an amplifier unit AP#n to which the in-cylinder pressure sensor CPS#n for each cylinder is connected; and a channel switching unit MUX to which the amplifier unit AP#n for each cylinder is connected. It selects a system to be measured from among a plurality of systems of signals from the amplifier units AP#n with a channel selection signal outputted from an engine-controlling electronic control unit and outputs combustion pressure data to the ECU. Further, it outputs to an amplifier unit AP#n with which measurement ends a reset signal for discharging the electric charge between the in-cylinder pressure sensor CPS#n and the amplifier circuit to efficiently acquire combustion pressure data of each cylinder with a simple structure without complicated processing.

Abstract: A positive charge of a sensor element is charged in a signal converting circuit, is converted into a positive voltage, and is outputted. When the polarity of the charge of the sensor element is inverted to the negative and an output of the signal converting circuit is decreased, the leaked charges are superimposed and become the negative. An automatic correction circuit detects the negative output and discharges the charges so as to set the input to “0”. Thus, the offset of the signal level due to the charge leakage is automatically corrected.

Abstract: A combustion-pressure-data acquisition system of a multi-cylinder engine according to the present invention includes an in-cylinder pressure sensor CPS#n for directly detecting combustion pressure in each cylinder; an amplifier unit AP#n to which the in-cylinder pressure sensor CPS#n for each cylinder is connected; and a channel switching unit MUX to which the amplifier unit AP#n for each cylinder is connected. It selects a system to be measured from among a plurality of systems of signals from the amplifier units AP#n with a channel selection signal outputted from an engine-controlling electronic control unit and outputs combustion pressure data to the ECU. Further, it outputs to an amplifier unit AP#n with which measurement ends a reset signal for discharging the electric charge between the in-cylinder pressure sensor CPS#n and the amplifier circuit to efficiently acquire combustion pressure data of each cylinder with a simple structure without complicated processing.

Abstract: A combustion pressure data collection system for a multi-cylinder engine includes a cylinder pressure sensor, an amplifier unit, and a channel switching unit. The cylinder pressure sensor directly detect a combustion pressure of respective cylinders, the amplifier unit converts a charge signal from the cylinder pressure sensor into voltage signal and have an automatic correction function for automatically correcting a voltage output level so that the level is setted to the same level before and after the cylinder pressure sensor generate a charge, and the amplifier unit of the respective cylinders is connected to the channel switching unit.

Abstract: Positive charges of a sensor element are stored in a capacitor for converting a voltage, are converted into a positive voltage by an amplifier, and then are outputted. When the polarity of the charges of the sensor element are inverted to the negative, the charges inversely flow from the capacitor for converting the voltage and feed back to an equivalent capacitor of the sensor element, and an output of the amplifier reduces and returns to a zero-point, an automatic correcting circuit makes an FET conductive and the charges are discharged in order to prevent the fluctuation of the zero-point level due to the negative drift.

Abstract: A combustion pressure data collection system for a multi-cylinder engine includes a cylinder pressure sensor, an amplifier unit, and a channel switching unit. The cylinder pressure sensor directly detect a combustion pressure of respective cylinders, the amplifier unit converts a charge signal from the cylinder pressure sensor into voltage signal and have an automatic correction function for automatically correcting a voltage output level so that the level is setted to the same level before and after the cylinder pressure sensor generate a charge, and the amplifier unit of the respective cylinders is connected to the channel switching unit.

Abstract: A positive charge of a sensor element is charged in a signal converting circuit, is converted into a positive voltage, and is outputted. When the polarity of the charge of the sensor element is inverted to the negative and an output of the signal converting circuit is decreased, the leaked charges are superimposed and become the negative. An automatic correction circuit detects the negative output and discharges the charges so as to set the input to “0”. Thus, the offset of the signal level due to the charge leakage is automatically corrected.

Abstract: The system has an engine, and a planetary gear. The planetary gear has a sun gear, a carrier rotatably supporting a plurality of pinions each of which engages with the sun gear, a ring gear engaging with the pinions. A first motor is connected to an output shaft of the engine and the sun gear of the planetary gear. The first motor is capable of using as a driving source and as a power generator. A second motor is connected to the ring gear. The second motor is also capable of using as a driving source and as a power generator. An automatic transmission is connected between the carrier of the planetary gear and an axle of a hybrid motor vehicle.

Abstract: A CVT-oil-pressure control apparatus has a primary cylinder provided for a primary pulley, having an oil chamber for applying an oil pressure to the primary pulley and a balance oil chamber for applying a centrifugal oil pressure to the primary pulley in a direction which is reverse of a centrifugal oil pressure generated in the oil chamber; a primary valve for adjusting a primary pressure to be applied to the oil chamber based on a line pressure applied by an oil pump; and a balance oil line that connects a drain port of the primary valve and the balance oil chamber. The oil is supplied from the primary valve to the balance oil chamber through the balance oil line.

Abstract: A working oil filter device for a continuously variable transmission including a primary pulley and a secondary pulley, between which a belt is made to run. The filter device comprises: a secondary pressure adjust valve for adjusting the pulley groove width thereof; a clutch pressure adjust valve for adjusting the clutch pressure; and a filter for filtering the working oil. The device can comprise a primary pressure adjust valve is provided, in place of the clutch pressure adjust valve. Further, The device can comprise a lubrication pressure adjust valve and a bypass oil passage for returning a drain oil.

Abstract: The system has an engine, and a planetary gear. The planetary gear has a sun gear, a carrier rotatably supporting a plurality of pinions each of which engages with the sun gear, a ring gear engaging with the pinions. A first motor is connected to an output shaft of the engine and the sun gear of the planetary gear. The first motor is capable of using as a driving source and as a power generator. A second motor is connected to the ring gear. The second motor is also capable of using as a driving source and as a power generator. An automatic transmission is connected between the carrier of the planetary gear and an axle of a hybrid motor vehicle.

Abstract: The system has an engine, and a planetary gear. The planetary gear has a sun gear, a carrier rotatably supporting a plurality of pinions each of which engages with the sun gear, a ring gear engaging with the pinions. A first motor is connected to an output shaft of the engine and the sun gear of the planetary gear. The first motor is capable of using as a driving source and as a power generator. A second motor is connected to the ring gear. The second motor is also capable of using as a driving source and as a power generator. An automatic transmission is connected between the carrier of the planetary gear and an axle of a hybrid motor vehicle.

Abstract: A working oil filter device for a continuously variable transmission including a primary pulley and a secondary pulley, between which a belt is made to run. The filter device comprises: a secondary pressure adjust valve for adjusting the pulley groove width thereof; a clutch pressure adjust valve for adjusting the clutch pressure; and a filter for filtering the working oil. The device can comprise a primary pressure adjust valve is provided, in place of the clutch pressure adjust valve. Further, The device can comprise a lubrication pressure adjust valve and a bypass oil passage for returning a drain oil.

Abstract: A CVT-oil-pressure control apparatus has a primary cylinder provided for a primary pulley, having an oil chamber for applying an oil pressure to the primary pulley and a balance oil chamber for applying a centrifugal oil pressure to the primary pulley in a direction which is reverse of a centrifugal oil pressure generated in the oil chamber; a primary valve for adjusting a primary pressure to be applied to the oil chamber based on a line pressure applied by an oil pump; and a balance oil line that connects a drain port of the primary valve and the balance oil chamber. The oil is supplied from the primary valve to the balance oil chamber through the balance oil line.

Abstract: The system has an engine, and a planetary gear. The planetary gear has a sun gear, a carrier rotatably supporting a plurality of pinions each of which engages with the sun gear, a ring gear engaging with the pinions. A first motor is connected to an output shaft of the engine and the sun gear of the planetary gear. The first motor is capable of using as a driving source and as a power generator. A second motor is connected to the ring gear. The second motor is also capable of using as a driving source and as a power generator. An automatic transmission is connected between the carrier of the planetary gear and an axle of a hybrid motor vehicle.

Abstract: A starting apparatus formed by a torque converter is provided between an engine and a continuously variable transmission. A forward and reverse changeover apparatus is formed by a double pinion type planetary gear. Further, a reverse brake is disposed around a ring gear of the planetary gear and a forward clutch is mounted around the reverse brake. A lock-up clutch is provided near the forward clutch. A torque converter case encloses the torque converter, the forward and reverse changeover apparatus, the reverse brake, the forward clutch and the lock-up clutch therein. Since the planetary gear, the reverse brake and the forward clutch are arranged in the radial direction on substantially the same plane, the overall width of the continuously variable automatic transmission can be shortened and the number of components can be reduced.

Abstract: An automatic transmission using a torque converter as a starting apparatus comprises a stator hub, an one-way clutch both of which are offset on the pump impeller side respectively, a brake cylinder case provided in an inner diameter portion of the torque converter, a brake piston provided in the brake cylinder case, a part or the whole of a reverse brake and a part of or the whole of a planetary gear which are accommodated in the inner diameter portion of the torque converter, thereby the axial length of the automatic transmission can be reduced.

Abstract: A torque converter, a forward and reverse changeover apparatus including a planetary gear, a reverse brake and a forward clutch, and a lock-up clutch are integrally accommodated in the same torque converter case. Further, the planetary gear, the reverse brake, the forward clutch and the lock-up clutch are arranged on approximately the same plane expanded in the radial direction with respect to a transmission input shaft. Further, a forward clutch piston and a lock-up piston are arranged side by side on the transmission main shaft and a hydraulic chamber for operating the lock-up piston is provided independently from other hydraulic circuits. Thus constituted continuously variable automatic transmission provides a transmission having a short width and a good controllability.

Abstract: An automatic transmission including a continuously variable transmission, a friction type starting apparatus and a forward and reverse changeover apparatus, comprises a sealed clutch housing rotating integrally with an engine output shaft for accommodating the friction type starting clutch and the forward and reverse changeover apparatus therein, a lubricating oil filled up in the clutch housing for cooling the starting clutch and the forward and reverse changeover apparatus and a clutch drum of the starting clutch integrally formed with the clutch housing, thereby an abrupt temperature rise in the starting clutch can be prevented and the durability of the starting clutch can be substantially improved. Further, since the friction type starting clutch and the forward and reverse changeover apparatus are packaged in the sealed clutch housing, a compact automatic transmission can be realized.