52 patents
Page 2 of 3
Utility
Valve device
29 Mar 22
A valve device of the present invention includes: a body (10) defining a passage (11) through which fluid flows; a valve shaft (20) pivotably supported by the body; a butterfly valve (30) fixed to the valve shaft to open and close the passage; and a drive unit (60) configured to impart a rotational drive force to the valve shaft.
Naoki Tanaka, Keigo Suzuki, Daisuke Takayama, Katsunari Tobe
Filed: 21 Aug 18
Utility
Electromagnetic switching valve
11 Jan 22
An electromagnetic switching valve includes: a sleeve; a spool; an electromagnetic actuator, including a plunger having a through passage and a stator exerting a magnetomotive force on the plunger; and a transmission member of a tubular shape, interposed between the plunger and the spool and transmitting a driving force.
Toshiki Ogasawara, Masashi Ueda, Kazuya Yonemura, Hitoshi Takasaki, Ryosuke Dakiishi
Filed: 24 Sep 20
Utility
Throttle device
23 Nov 21
A throttle device, comprising: a throttle valve (13) disposed in a plurality of intake passages (12) of a throttle body (11); a throttle shaft (14) supporting the throttle valve (13); a motor (15) for driving the throttle valve (13) to open and close through the throttle shaft (14); a rotation transmission mechanism (20) interposed between the motor (15) and the throttle shaft (14); and a position sensor to detect a displacement in the rotation transmission mechanism (20).
Daisuke Hamasaki
Filed: 17 Jan 19
Utility
Throttle device
2 Nov 21
Provided is a throttle device including a total of two throttle units in each two cylinders in an engine 1, each of the throttle units having a unit body having intake air passages corresponding to four cylinders of the engine, a throttle shaft rotatably supported by the unit body, throttle valves secured to the throttle shaft to open and close the intake air passages for the cylinders, a motor, and a deceleration mechanism decelerating rotation of a drive shaft of the motor and transmitting the decelerated rotation to the throttle shaft, in which a deceleration ratio of the deceleration mechanism provided in a first throttle unit and a deceleration ratio of the deceleration mechanism provided in a second throttle unit out of the two throttle units are different from each other.
Isamu Tanaka
Filed: 18 Nov 20
Utility
Throttle device
19 Oct 21
Provided is a throttle device including a total of two throttle units in two cylinders in an engine, each of the throttle units having a throttle shaft, throttle valves, and a motor driving and rotating the throttle shaft, in which a return spring provided in a first throttle unit and a return spring provided in a second throttle unit out of the two throttle units are components of the same type and have mutually different installation forms in the throttle units such that biasing torques at the same degree of opening of the throttle valves differ from each other, thereby enabling performances of responding to a change in rotation speed to be different from each other.
Isamu Tanaka
Filed: 18 Nov 20
Utility
Connection unit, electric motor, and valve timing change device
12 Oct 21
A connection unit connected to a rotation body by fitting to transmit a rotation force includes a rotation shaft, having a width across flat portion; and a core member, having fitting portions fitted to the rotation body in a direction perpendicular to the width across flat portion and an annular portion that the width across flat portion are slidably fitted, and held on the rotation shaft to be capable of moving relatively in two dimensions along the width across flat portion while rotating integrally with the rotation shaft.
Takeshi Ono, Kouji Sugano, Yuuhei Sanekata, Hiroki Ota, Toshinori Inafune
Filed: 16 Oct 19
Utility
Throttle device
12 Oct 21
Provided is a throttle device including a total of two throttle units in an engine for each two cylinders, each of the throttle units having a unit body having intake air passages corresponding to the four cylinders of the engine, a throttle shaft rotatably supported by the unit body, throttle valves secured to the throttle shaft to open and close the intake air passages for the cylinders, and a motor driving and rotating the throttle shaft, in which a first motor provided in a first throttle unit and a second motor provided in a second throttle unit out of the two throttle units have mutually different responsivities to a change in rotation speed.
Isamu Tanaka
Filed: 18 Nov 20
Utility
Combustion abnormality detecting device and non-transitory computer-readable storage medium
14 Sep 21
The disclosure provides a combustion abnormality detecting device, a combustion abnormality detecting method, and a non-transitory computer-readable storage medium, a misfire detection accuracy is increased by increasing a piezoelectric detection accuracy.
Satoru Fujisaki, Katsuhiko Fukui
Filed: 6 Mar 20
Utility
Throttle device
31 Aug 21
A throttle device includes a default mechanism.
Sho Moriya, Keigo Suzuki, Masaki Hiei
Filed: 10 Jan 19
Utility
Exhaust valve device for vehicle
31 Aug 21
An exhaust valve device for a vehicle includes: a valve element 7 axially supported by a rotating shaft 5 in a bore 4 of a valve body 3 produced through casting; sealing projections 21 and 22 integrally formed on an inner circumferential surface of the bore 4 to follow one side portion 7a and the other side portion 7b of an outer circumferential edge of the valve element 7 at a fully closed position; sealing surfaces 21a and 22a of the sealing projections 21 and 22, the right side portion 7a and the left side portion 7b of the valve element 7 at the fully closed position abutting respectively on the sealing surfaces; R-shaped corners 21b and 22b formed between the inner circumferential surface of the bore 4 and the sealing surfaces 21a and 22a; and diameter enlarged portions 25 formed in the inner circumferential surface of the bore 4 to enlarge the bore 4 that are adjacent respectively to the sealing surfaces 21a and 22a of the sealing projections 21 and 22 and correspond to lengths of the sealing surfaces 21a and 22a, and the valve element 7 has an outer shape enlarged to correspond to a height of the corners 21b and 22b on an outer circumferential side with formation of the diameter enlarged portions 25 at the fully closed position.
Toshiaki Ishii, Makoto Koyama, Daisuke Takayama, Naoki Tanaka
Filed: 21 Jan 21
Utility
Valve device
31 Aug 21
A check valve for opening/closing intake-side communication passages through which fuel passes, includes a pump body including a partition wall with the communication passages formed therein, a valve body supported by the partition wall, made of a flexible material, and formed into a plate shape, and a valve seat provided around opening portions of the communication passages on the partition wall and including a seat surface to abut against the valve body when the valve is closed, the seat surface including a groove having an opening-portion-side wall surface lying on an upstream side and an outer-side wall surface lying on a downstream side, the upstream and downstream sides being sides in a direction in which fluid passes between the valve body and the seat surface when the valve is opened, the outer-side wall surface having a gentler slope than a slope of the opening-portion-side wall surface.
Norio Takehana
Filed: 17 Oct 18
Utility
Electromagnetic valve
6 Jul 21
To provide an electromagnetic valve with less parts count of components for opening-closing operation.
Takahiko Kimura
Filed: 10 Jul 19
Utility
General purpose engine
11 May 21
To secure detection accuracy of a temperature sensor in a general purpose engine.
Hiroshi Mizui, Osamu Miura
Filed: 22 Jun 18
Utility
Pressure sensor
6 Apr 21
A pressure sensor including a housing extending along an axial line, a diaphragm fixed to a front-end side of the housing, a piezoelectric unit disposed in a hole in the housing and including a piezoelectric element, a transmission member that transmits deformation of the diaphragm to the piezoelectric unit, and a guide member having a through hole extending along the axial line and surrounding the piezoelectric unit in the through hole. (SL/AL)≤0.26 is satisfied in the cross section perpendicular to the axial line passing through the piezoelectric element, where SL is the maximum value of the distance in the radial direction between the center of the through hole and the center of the piezoelectric element and AL is the maximum value of the distance in the radial direction between the outside surface of the piezoelectric element and the center of the through hole.
Junki Iwabuchi, Tatsunori Yamada, Tomoya Sato
Filed: 25 Oct 17
Utility
Accelerator pedal device
16 Feb 21
This accelerator pedal device includes a pedal arm having an accelerator pedal, a housing that supports the pedal arm so as to be capable of swinging about a prescribed axis line between a rest position and a maximum push position, a slider that slides over an inner wall of the housing, a contact part formed on the pedal arm in order to exert pressing force while separably coining into contact with the slider, and an urging spring disposed between the housing and the slider so that the urging force pressing the slider against the inner wall and the contact part increases in accordance with the pushing of the accelerator pedal.
Jun Nagashima, Satoshi Miyazaki, Kazunari Nakashima
Filed: 30 Nov 17
Utility
Electromagnetic actuator
26 Jan 21
An electromagnetic actuator in which magnetic force from a permanent magnet causes a stator core and a first plunger to attract each other, and electromagnetic force generated by energizing an electromagnetic coil causes a mover to resist against the magnetic force from the permanent magnet to move in an axial direction separating from a front end portion of the stator core, wherein a ring member provided on the mover is inserted in the axial direction into a hole portion provided in a bottom wall member of a yoke, and an overlap size between the ring member and the bottom wall member is increased when the mover moves relative to the stator core in a separating direction, so that a magnetism transmission quantity from the permanent magnet passing through an overlap portion between the ring member and the bottom wall member is inhibited from being reduced.
Toshiki Ogasawara
Filed: 17 Apr 18
Utility
Throttle device
19 Jan 21
A throttle device, including: a throttle valve (13) disposed in a plurality of intake passages (12) of a throttle body (11); a throttle shaft (14) supporting the throttle valve (13); a motor (15) for driving the throttle valve (13) to open and close through the throttle shaft (14); a rotation transmission mechanism (20) interposed between the motor (15) and the throttle shaft (14); and a position sensor to detect a displacement in the rotation transmission mechanism (20).
Daisuke Hamasaki
Filed: 17 Jan 19
Utility
Pressure detection signal processing device, engine control system, and non-transitory computer readable medium storing a program
19 Jan 21
A pressure detection signal processing device, engine control system, and non-transitory computer readable medium storing a program are provided.
Ren Takahashi, Katsuhiko Fukui
Filed: 18 Nov 19
Utility
Valve timing change device
7 Dec 20
A valve timing change device includes: a housing rotor (10); a vane rotor; a fastening bolt (40) for fastening the vane rotor to a cam shaft; and an advance angle oil passage that constitutes a ring-shaped groove communicating with an advance angle chamber and a delay angle oil passage that constitutes a ring-shaped groove communicating with a delay angle chamber, via oil passages which are open at intervals on an outer circumferential surface of the fastening bolt.
Takahiro Ogura, Chikara Oikawa
Filed: 25 Dec 16
Utility
Intake manifold
30 Nov 20
To provide a compact intake manifold which can easily and reliably hold the flame arrester (25) to the base member, the base member (21) having the flame arrester (25) incorporated therein has the recessed body portion (31) and the annular fitting holding portion (32) for fitting the flame arrester (25) in the axial direction.
Hirobumi Oosawa
Filed: 16 Aug 16