公开(公告)号：US09945496B2

公开(公告)日：2018-04-17

申请号：US15249651

申请日：2016-08-29

Applicant: JATCO LTD

Inventor： Masaru Shimada ,  Hideki Ishii ,  Masato Urushibata ,  Akio Nonomura ,  Kenji Matsumoto ,  Hideki Nakazawa

IPC: F16K47/08 ,  F15B21/00 ,  F16H61/00 ,  F16H61/02 ,  F16K31/06 ,  F15B13/08

CPC classification number: F16K47/08 ,  B60Y2306/09 ,  F15B13/081 ,  F15B13/0871 ,  F15B21/008 ,  F16H61/0009 ,  F16H61/0265 ,  F16H61/0276 ,  F16H2061/0279 ,  F16K31/06

Abstract: Structure of control valve body of automatic transmission has valve body enclosures having channels on opposing surfaces thereof; a separate plate sandwiched between the valve body enclosures for defining oil passages on both sides of the separate plate; and an orifice provided at the separate plate. The oil passages on both sides of the separate plate, which are upstream and downstream side oil passages located on upstream and downstream sides of the separate plate, communicate with each other through the orifice. Depth h, in a part facing to the orifice, of the channel corresponding to the downstream side oil passage is set to be shallower than depth of the channel corresponding to the upstream side oil passage, and the depth h of the channel in the part facing to the orifice and a diameter d of the orifice are set so as to satisfy relationship of h≤3d.

公开(公告)号：US20180100578A1

公开(公告)日：2018-04-12

申请号：US15561476

申请日：2016-03-09

Applicant: JATCO Ltd

Inventor： Yutaka SHIMIZU ,  Shusaku KATAKURA ,  Yusuke OTA ,  Youko YOSHIOKA ,  Yukiyoshi INUTA ,  Tomoyuki KOIKE

IPC: F16H61/00 ,  F16H63/50 ,  F16H61/662 ,  B60W20/15 ,  B60W10/30

Abstract: An oil pressure control device for a vehicle is configured such that, when switching from an oil pressure supply by means of a mechanical oil pump driven by a motor/generator to an oil pressure supply by means of an electric oil pump driven by a sub-motor, a supply ratio of oil supplied from the mechanical oil pump and a supply ratio of oil supplied from the electric oil pump, are adjusted based on an oil pressure difference between a first oil pressure and a second oil pressure, via first and second flapper valves. When the first oil pressure becomes less than or equal to a pump drive threshold, an increase in the second oil pressure is initiated, and the first oil pressure and the second oil pressure are made to match at a predetermined equilibrium oil pressure higher than a required line pressure.

公开(公告)号：US09939063B2

公开(公告)日：2018-04-10

申请号：US15324880

申请日：2015-05-27

Applicant: JATCO Ltd ,  NISSAN MOTOR CO., LTD.

Inventor： Tomoaki Honma ,  Yuta Suzuki ,  Itaru Shinohara ,  Hiroshi Sekiya ,  Hiromu Ogino

IPC: F16H59/72 ,  F16H61/662 ,  F16H59/44 ,  F16H59/68

CPC classification number: F16H61/66272 ,  F16H59/44 ,  F16H59/72 ,  F16H61/0021 ,  F16H61/0206 ,  F16H61/662 ,  F16H2059/683

Abstract: A control device for a continuously variable transmission includes: a line pressure generating means configured to generate a line pressure; a pilot valve configured to supply a pilot pressure regulated so as not to exceed a first predetermined pressure when the line pressure exceeds the first predetermined pressure; a control means configured to control solenoid valves by the pilot pressure, and thereby to generate belt clamping forces; an oil vibration sensing means configured to sense an oil vibration; and a line pressure increase means configured to increase the line pressure to be greater than the first predetermined pressure when the oil vibration sensing means senses the oil vibration.

公开(公告)号：US09920832B2

公开(公告)日：2018-03-20

申请号：US14914328

申请日：2014-06-27

Applicant: JATCO Ltd

Inventor： Kouichi Hatajima

IPC: F16H59/46 ,  F16H61/662 ,  F16H61/12

CPC classification number: F16H61/662 ,  F16H59/46 ,  F16H61/12 ,  F16H2059/465 ,  F16H2061/1208

Abstract: An instantaneous revolution speed Nm of an input shaft is calculated from an input period of a pulse signal from a revolution sensor, a revolution speed Nf is calculated by filter processing the instantaneous revolution speed Nm, a determination is made that a belt slip occurs when, during a stop of a vehicle, a state in which the revolution speed Nf is equal to or higher than a slip determination speed NSL is continued for a time equal to or longer than slip determination time TSL, and an immediately prior revolution speed Nf is held until a time of a pulse signal no input exceeds a road wheel lock corresponding time TWL which is longer than a slip determination time TSL.

公开(公告)号：US20180066751A1

公开(公告)日：2018-03-08

申请号：US15558907

申请日：2016-02-09

Applicant: JATCO Ltd ,  NISSAN MOTOR CO., LTD.

Inventor： Haruka OZONO ,  Masahiro HAMANO

IPC: F16H61/12 ,  F16H59/40 ,  F16H63/50

CPC classification number: F16H61/12 ,  B60W10/107 ,  B60W10/11 ,  B60W2710/1005 ,  B60W2710/1083 ,  B60W2710/1088 ,  F16H59/40 ,  F16H61/662 ,  F16H61/702 ,  F16H63/502 ,  F16H2061/1232 ,  F16H2061/1244 ,  F16H2061/1284 ,  F16H2061/6614

Abstract: In a transmission control device, a controller determines failure of a rotation sensor. A hydraulic control circuit and the controller variably control a speed ratio of a variator, and in a case where the failure is determined, execute first control of restricting a shift range of the variator. The hydraulic control circuit and the controller variably control a gear position of a sub-transmission mechanism, and in a case where the failure is determined, execute second control of fixing the gear position of the sub-transmission mechanism to first speed. The hydraulic control circuit and the controller execute the second control at a different timing from the first control in a case where the gear position of the sub-transmission mechanism upon a determination of the failure is second speed.

公开(公告)号：US09845095B2

公开(公告)日：2017-12-19

申请号：US14906871

申请日：2014-07-08

Applicant: JATCO Ltd

Inventor： Seiji Kasahara ,  Hideshi Wakayama ,  Naohiro Hoshi

IPC: B60W10/02 ,  B60W10/06 ,  B60W30/18 ,  F16H61/662 ,  F16H61/48 ,  F16H59/66

CPC classification number: B60W30/18118 ,  B60W10/023 ,  B60W10/06 ,  B60Y2200/92 ,  F16H61/48 ,  F16H61/66259 ,  F16H2059/663 ,  F16H2312/022 ,  F16H2312/04

Abstract: A vehicle control device for controlling a vehicle with a drive source, a friction transmission mechanism provided between the drive source and drive wheels and a fluid transmission mechanism provided between the friction transmission mechanism and the drive source includes a suppression unit configured to suppress a decrease of a speed ratio of the fluid transmission mechanism if the speed ratio becomes negative when the vehicle starts.

公开(公告)号：US20170349180A1

公开(公告)日：2017-12-07

申请号：US15534590

申请日：2015-09-24

Applicant: JATCO Ltd

Inventor： Tomoaki HONMA ,  Akihiro TANABE ,  Tomoko SASAKI

IPC: B60W30/182 ,  B60W10/02 ,  B60W10/107 ,  B60W30/18 ,  F16H61/66

CPC classification number: B60W30/182 ,  B60W10/026 ,  B60W10/107 ,  B60W30/18109 ,  B60W2510/107 ,  B60W2520/10 ,  B60W2520/105 ,  B60W2540/10 ,  B60W2710/024 ,  B60W2710/1005 ,  F16H59/72 ,  F16H61/0213 ,  F16H61/14 ,  F16H61/66 ,  F16H2061/6611 ,  F16H2061/6615

Abstract: The drive system from the engine (1) to the drive wheels (7) of a vehicle is equipped with a torque converter (2), which has a lock-up clutch (3), and a variator (4). Said engined car is provided with a lock-up control means for controlling the engagement/disengagement of the lock-up clutch (3) and a gear change mode switch-controlling means (FIG. 8) for performing control to switch between a “continuously variable gear change mode” and a “DSTEP gear change mode.” While traveling, the gear change mode switch-controlling means (FIG. 8) prohibits gear change by the “DSTEP gear change mode” when the detected oil temperature is at or below a lock-up engagement-permitting threshold for permitting engagement of the lock-up clutch (3) and allows gear change by the “DSTEP gear change mode” when the detected oil temperature is higher than the lock-up engagement-permitting threshold.

公开(公告)号：US20170328447A1

公开(公告)日：2017-11-16

申请号：US15533762

申请日：2015-12-08

Applicant: JATCO Ltd

Inventor： Hiroshi TANGE

IPC: F16H9/24 ,  F16H9/10 ,  F16G13/06

CPC classification number: F16H9/24 ,  F16G13/06 ,  F16H9/10 ,  F16H55/30 ,  F16H55/54

Abstract: Transmission mechanism has set of two composite sprockets (5, 5), each having pinion sprockets (20) supported movably in radial direction with respect to rotation shaft (1) inputting or outputting power and movement mechanism radially moving pinion sprockets (20) in synchronization with each other while maintaining equidistance of pinion sprocket (20) from shaft center (C1) of rotation shaft (1), and chain (6) wound around two composite sprockets. Transmission ratio is changed by changing circumcircle radius that is radius of circle encircling and circumscribing all the pinion sprockets (20). Each guide rod (29) has first guide rod (291) guiding chain (6) all the time regardless of circumcircle radius size, and second guide rod (292) guiding chain (6) at least when circumcircle radius is a maximum and positioned at radial direction inner side with respect to first guide rod (291) when circumcircle radius is a minimum. With this, ratio coverage can be expanded.

公开(公告)号：US20170321802A1

公开(公告)日：2017-11-09

申请号：US15525634

申请日：2015-10-23

Applicant: JATCO Ltd ,  NISSAN MOTOR CO., LTD.

Inventor： Seiichiro TAKAHASHI ,  Tomoaki HONMA ,  Yuta SUZUKI ,  Itaru SHINOHARA

IPC: F16H61/662 ,  F16H61/00 ,  F16H9/18

CPC classification number: F16H61/66272 ,  F16H9/18 ,  F16H61/0021 ,  F16H61/0202

Abstract: A continuously variable transmission (100), wherein pressure equalization control is performed to make line pressure (PL) equal to secondary pressure (Psec) when prescribed start conditions are satisfied. During pressure equalization control, a secondary pressure indicated value (Psec_co) is raised by a prescribed amount (S10), then a line pressure indicated value (PL_co) is gradually decreased (S30). If determination is made that line pressure is the same as the secondary pressure after secondary actual pressure (Psec) is lowered (S40), then the line pressure is controlled so that the secondary actual pressure (Psec) becomes the secondary pressure indicated value (Psec_co) (S50). At the start of pressure equalization control, if the difference (ΔPsec) found by subtracting the secondary pressure indicated value from the secondary actual value is negative (S120), then a primary pressure indicated value is corrected on the basis of the difference (S130).

公开(公告)号：US20170320478A1

公开(公告)日：2017-11-09

申请号：US15319460

申请日：2015-02-16

Applicant: JATCO Ltd

Inventor： Kohshi TAMAI ,  Takao ARIMATSU

IPC: B60W10/06 ,  B60W30/18 ,  B60W10/18 ,  B60W10/115 ,  F16D41/04 ,  F16H61/08 ,  F16H61/04

CPC classification number: B60W10/06 ,  B60W10/115 ,  B60W10/182 ,  B60W30/18027 ,  F16D41/04 ,  F16D48/02 ,  F16D48/06 ,  F16D48/066 ,  F16D2500/3144 ,  F16D2500/31466 ,  F16D2500/3166 ,  F16D2500/50206 ,  F16D2500/50866 ,  F16H59/105 ,  F16H59/18 ,  F16H59/24 ,  F16H61/04 ,  F16H61/061 ,  F16H61/08 ,  F16H2059/088 ,  F16H2061/0481 ,  F16H2061/0485

Abstract: A vehicle control device including an electronically controlled throttle device and configured to control a vehicle for supplying a hydraulic pressure to a friction engaging element of a transmission on the basis of a throttle valve opening controls a start timing of a supply of the hydraulic pressure to the friction engaging element on the basis of an accelerator pedal opening and the throttle valve opening if a shift lever is changed from an advance position to a reverse position or from the reverse position to the advance position.