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171. 发明专利

JPH0976779A TORQUE DISTRIBUTION CONTROLLER OF FOUR-WHEEL DRIVE VEHICLE 失效
公开(公告)号：JPH0976779A
公开(公告)日：1997-03-25
申请号：JP23414095
申请日：1995-09-12
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： NODA JUNICHI , KUROIWA HIROSHI
IPC分类号： B60K17/34
摘要： PROBLEM TO BE SOLVED: To properly distribute torque from an engine to front and rear wheels on an ascending slope. SOLUTION: Torque from an engine 1 is directly transmitted through a transmission 2 to front wheels and further through a transfer 4 to rear wheels 9. A controller 20 includes a driving shaft torque calculating part 40 for calculating torque applied to a front wheel drive shaft 8a, a slope calculating part 50 for calculating the slope of the place of traveling, a transmitted torque calculating part 29 for correcting basic transmitted torque and causing the corrected basic transmitted torque to be target transmitted torque according to drive shaft torque Td calculated by the drive shaft torque calculating part 40 and a slope θ calculated by the slope calculating part 50 and a hydraulic control valve 5 for operating the transfer 4 according to the objective transmitted torque calculated by the transmitted torque calculating part 29.

172. 发明专利

JPH08324299A CONTROL METHOD AND CONTROL DEVICE OF POWER TRAIN 失效
公开(公告)号：JPH08324299A
公开(公告)日：1996-12-10
申请号：JP13633595
申请日：1995-06-02
申请人： HITACHI LTD
发明人： KURATA KENICHIRO , MINOWA TOSHIMICHI , KUROIWA HIROSHI , IBAMOTO MASAHIKO
IPC分类号： B60W10/04 , B60W10/06 , B60W10/10 , F02D29/00 , F16H59/70 , F16H61/12 , F16H63/50 , B60K41/04
摘要： PURPOSE: To precisely reduce a speed change shock by starting control of torque of an output shaft of an automatic transmission according to a value of a rate of change of rotating speed, and prohibiting output of a signal by masking a signal of a rate of change of rotating speed for a predetermined period from speed change starting time. CONSTITUTION: A speed change phase judging means 8 measures time until a speed change command value shows the final speed change position from a start of speed change, and when it is shorter than prescribed time, it is judged as sudden stepping, and when it is longer than that, it is judged as gradual stepping, and a speed change phase is judged. When a clutch of a non- continuously variable transmission is fastened in the final speed change position after the speed change is started, rotating speed of an output shaft of the transmission changes, and is transmitted to a driving shaft, and becomes a speed change shock. Then, in a mask means 3, a clutch fastening time detecting means 5 and a torque control means 6, various parameters are changed according to a speed change phase, and a signal waveform and the size or the like of the parameters are changed by a speed change condition, and various speed change shocks can be reduced.

173. 发明专利

JPH08290729A POWER TRAIN CONTROLLER 失效
公开(公告)号：JPH08290729A
公开(公告)日：1996-11-05
申请号：JP9661495
申请日：1995-04-21
申请人： HITACHI LTD
发明人： KUROIWA HIROSHI , SHIDA MASAMI , IBAMOTO MASAHIKO , OKADA MITSUYOSHI
IPC分类号： B60W10/04 , B60W10/02 , B60W10/06 , B60W10/10 , B60W10/18 , B60W10/184 , F02D29/00 , F02D45/00 , F02P5/15 , F16H61/02 , F16H61/04 , F16H63/50 , B60K41/04
摘要： PURPOSE: To suitably reduce a speed change shock as well as to eliminate tuning parts as much as possible so as to reduce development manpower, by estimating the output shaft torque of an automatic speed change gear, and monitoring the magnitude of an estimated driving torque so as to control the line pressure of the automatic speed change gear. CONSTITUTION: Information from a crank angle sensor, an airflow sensor 10, a throttle sensor 18 and so on is inputted in an ECU 8, and also the ECU 8 outputs a control signal to an injector 13, an ISC 19 and so on. While, signals from the rotary sensor 17 of a transmission output shaft, an AT oil temperature sensor and so on, and an engine speed, a throttle opening signal and so on from the ECU 8 are inputted in an ATCU 7, and also the ATCU 7 outputs a control signal to an oil pressure control and switching solenoid valves 20 and so on mounted in a hydraulic circuit 6. Controllers such as the ATCU 7 and the ECU 8 estimate the output shaft torque of an automatic speed change gear 2, and monitor the magnitude of an estimated driving torque, and also control the line pressure of the automatic speed change gear 2 according to this monitoring.

174. 发明专利

JPH06317242A DRIVING SHAFT TORQUE CONTROL DEVICE 失效
公开(公告)号：JPH06317242A
公开(公告)日：1994-11-15
申请号：JP10316693
申请日：1993-04-28
申请人： HITACHI LTD
发明人： IBAMOTO MASAHIKO , SATO KAZUHIKO , OKADA MITSUYOSHI , KUROIWA HIROSHI , MINOWA TOSHIMICHI
IPC分类号： F02D45/00 , B60W10/04 , B60W10/06 , B60W10/10 , B60W10/11 , F02D29/00 , F02D41/04 , F02P5/15
摘要： PURPOSE:To reduce a speed change shock by carrying out feedback control of driving shaft torque without using an expensive torque sensor. CONSTITUTION:A driving shaft torque calculating part 10 to find driving shaft torque Td from the number Ne of revolutions of an engine, throttle opening (theta) and the number Nd of revolutions of a driving shaft, a torque control period setting part 9 to set a driving shaft torque control period at speed change time and a target driving shaft torque setting part 11 to determine target driving shaft torque Ta in a torque control period, are provided. A torque deviation operation part 12 to find deviation (d) between the target driving shaft torque Ta and the driving shaft torque Td found by the driving shaft torque calculating part 10 and an engine control part 7 to change engine torque by controlling the ignition timing so as to eliminate this deviation (d), are also provided.

175. 发明专利

JPH0684939B2 失效
公开(公告)号：JPH0684939B2
公开(公告)日：1994-10-26
申请号：JP18850686
申请日：1986-08-13
申请人： HITACHI LTD
发明人： KUROIWA HIROSHI , OOYAMA TAKASHIGE
IPC分类号： G01N21/62 , F02B3/06 , F02D35/02 , F02D41/00 , F02D41/14 , F02D41/34 , F02D45/00 , F02P17/12 , G01M15/04 , G01N21/71 , G01M15/00

176. 发明专利

JPH0643022A FLAME LIGHT DETECTOR 失效
公开(公告)号：JPH0643022A
公开(公告)日：1994-02-18
申请号：JP22967092
申请日：1992-08-28
申请人： HITACHI LTD
发明人： KUROIWA HIROSHI , OYAMA TAKASHIGE
IPC分类号： F23N5/08 , G01J1/02
摘要： PURPOSE:To obtain a comact fiame light detector by employing a multicomponent optical fiber on the output side and projecting the input end of an input side silicon optical fiber from the end of threaded casing. CONSTITUTION:A threaded casing 1 comprises a hexagonal tightening nut section, a threaded section 1b to be fixed to a combustion cahamber, and a threaded section 1c for an optical fiber 4 connector. A silicon optical fiber 2a is laid on the center axis in the casing 1 while being guarded by a metal pipe 8 having relatively low thermal expansion and an insulator 9 excellent in heat resistance, e.g. ceramic, is applied thereto. The fiber 2a has an input end opening into the combustion chamber and an output abutting on a multicomponent optical fiber 2b througha metal joint 10. This constitution provides compact a flame light introducing section 3 excellent in heat resistance and airtightness.

177. 发明专利

JPH05240704A 失效
公开(公告)号：JPH05240704A
公开(公告)日：1993-09-17
申请号：JP22966792
申请日：1992-08-28
申请人： HITACHI LTD
发明人： KUROIWA HIROSHI , OYAMA TAKASHIGE
IPC分类号： G01J1/02 , F23N5/08
摘要： PURPOSE:To reduce the diameter of an optical fiber cable by providing a means for condensing flame light detected between a flame light detecting optical fiber and the optical fiber cable. CONSTITUTION:A photoconductor 2 constituting a flame light introducing portion 3 is formed by a quartz optical fiber 2a and a multicomponent optical fiber 2b connected to the output end of the fiber 2a, the input end of the fiber 2a being projected from a screw casing 1 toward a combustion chamber. The fiber 2b is provided with the function of a lens to condense flame light Q(indicated by arrow in Figure) to the distance from X1 to X2. Therefore, a communication optical fiber cable 4a can be used as X2, i.e., the external optical fiber 4 of the casing 1. The cable 4a is isolated from a severe environment around the combustion chamber, and rays of frame light from cylinders are focused by the optical fibers 4b-4e of the cable 4a and are converted into an electric amount by a photoelectric element 5a connected to the end portion of the cable 4a. Signals output from the element 5a are sent to a signal processing element 5b and undergo required processing.

178. 发明专利

JPH04357358A BELT PROTECTOR OF BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION FOR AUTOMOBILE 失效
公开(公告)号：JPH04357358A
公开(公告)日：1992-12-10
申请号：JP12906391
申请日：1991-05-31
申请人： HITACHI LTD
发明人： OKADA MITSUYOSHI , KUROIWA HIROSHI
IPC分类号： B60W10/04 , B60W10/06 , B60W10/10 , B60W10/101 , F02D29/00 , F16H59/36 , F16H61/00 , F16H63/40 , F16H63/50
摘要： PURPOSE:To prevent a clutch from the degradation of durability due to the slippage thereof and reduce the output of an engine without the slippage of a belt for improving the durability of the belt concerning the protection of the belt of a belt type continuously variable transmission for an automobile. CONSTITUTION:An engine controlling computer 20 and belt type continuously variable transmission controlling computer 21 are combined with each other by an engine output reduction requested signal TD to reduce the output of the engine. Thus, an overload applied to a belt can be restrained to improve the durability of the belt which is not slipped.

179. 发明专利

JPH04351367A TRANSMITTED POWER ADJUSTING DEVICE 失效
公开(公告)号：JPH04351367A
公开(公告)日：1992-12-07
申请号：JP12344891
申请日：1991-05-28
申请人： HITACHI LTD
发明人： OKADA MITSUYOSHI , KUROIWA HIROSHI
IPC分类号： F16H9/00 , F16H59/24 , F16H59/40 , F16H59/42 , F16H59/54 , F16H61/00 , F16H61/04 , F16H61/10 , F16H61/18
摘要： PURPOSE:To reduce shock generation with a continuously variable transmission of belt type for a car by securing a sufficient drive force at restarting after steep deceleration, and smoothen the shift operation from the N to D range. CONSTITUTION:A fore-stage power transmitting element 6 is provided before a primary side pulley 8 while a rear-stage power transmitting element 7 is furnished behind the secondary side pulley 9, and control of the clutching condition is performed in compliance with the situation, i.e., at steep deceleration or shift operation from the N-range to D-range. Also a sufficient drive force is obtained for restarting after steep deceleration, and shift operation from the N to D range is performed smoothly with shocks reduced.

180. 发明专利

JPH02241950A COMBUSTION PHOTO DETECTOR OF INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE AIR-FUEL RATIO CONTROL DEVICE WITH THE SAME 失效
公开(公告)号：JPH02241950A
公开(公告)日：1990-09-26
申请号：JP6078689
申请日：1989-03-15
申请人： HITACHI LTD , MAZDA MOTOR
发明人： KUROIWA HIROSHI , OYAMA NOBUSHIGE , TAWARA YOSHITAKA , TANIGAWA MASATOSHI
IPC分类号： F02D41/14 , F02D45/00
摘要： PURPOSE:To correctly detect the air-fuel ratio of combustion gas in a combustion chamber even if the combustion photo detecting surface is contaminated by providing a photoelectric converter for light of two specified wavelengths more than a near infrared region among combustion lights derived by a probe. CONSTITUTION:A combustion light probe 11 integral with a spark plug is installed on the head portion of an internal combustion engine 20 in such a manner as to face on a combustion chamber 21, a fuel injection valve 23 is fitted to an intake pipe 22 and filters 13, 14, photoelectric converters 15, 16 and the other arithmetic units or the like are provided in a control unit 24, whereby the fuel supply quantity is calculated in such a manner that the air-fuel ratio of combustion gas detected by a combustion photo detector 10 becomes a theoretical air-fuel ratio to control the fuel injection valve 23. The combustion light derived outside the combustion chamber 21 by the probe 11 is branched into equal quantities of light by a two-branch optical fiber 12, light in near infrared region selected by the filters 13, 14 is branched, and the branched light is conducted to the respective photo detecting elements 15, 16 to be photo-electric converted.

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