公开(公告)号：US11371870B2

公开(公告)日：2022-06-28

申请号：US16928078

申请日：2020-07-14

Applicant: DENSO CORPORATION

Inventor： Noboru Kitahara ,  Teruaki Kaifu ,  Tomoaki Nakano

IPC: G01F1/72 ,  G01F1/696 ,  G01F1/698

Abstract: An air flow rate measurement device includes a flow rate detection unit, a detected flow rate response compensation unit, a pulsation amplitude calculation unit, a correction value calculation unit, and an error correction unit. The flow rate detection unit detects a detected flow rate. The detected flow rate response compensation unit advances a response time of the detected flow rate and calculating a compensation flow rate which is an output obtained by compensating for a response delay of the detected flow rate. The pulsation amplitude calculation unit calculates a pulsation amplitude correlated with a pulsation amplitude in the detected flow rate. The correction value calculation unit calculates a pulsation correction value which is a value for correcting the compensation flow rate based on the pulsation amplitude. The error correction unit corrects the compensation flow rate based on the pulsation correction value.

公开(公告)号：US09447851B2

公开(公告)日：2016-09-20

申请号：US14573296

申请日：2014-12-17

Applicant: DENSO CORPORATION

Inventor： Hitoshi Noguchi ,  Hiroshi Okada ,  Tomoaki Nakano ,  Yoshihiro Yamashita ,  Yousuke Yamamoto ,  Kazuhisa Hara ,  Toshihisa Nakajima ,  Kazuki Matsuo ,  Toshikazu Mori ,  Shuhei Oe ,  Hikaru Kokumai ,  Kiyoshi Iwade

IPC: F16H7/22 ,  F16H7/12 ,  F02N15/02 ,  F02N11/08 ,  F02B67/06 ,  F16H7/08 ,  F02N11/04 ,  F02N15/08

CPC classification number: F16H7/1281 ,  F02B67/06 ,  F02N11/04 ,  F02N11/0814 ,  F02N11/0844 ,  F02N15/02 ,  F02N15/08 ,  F02N2200/125 ,  F16H2007/0812 ,  F16H2007/0885 ,  Y02T10/48 ,  Y10S903/909 ,  Y10T477/23

Abstract: A power transmission system transmits power from an internal combustion engine to a first and a second auxiliary device through an endless transmitting member. Prior to issuing of an engine start request, the first auxiliary device is actuated to move a tensioner pulley to a given position to increase the degree of tension of the endless transmitting member. The actuation of the first auxiliary device as an engine starter upon the issuing of the engine start request, therefore, enables a drive shaft of the engine to be rotated immediately within a required time to crank the engine. This achieves a quick start of the engine and results in a decrease in amount of time between the issuing of the engine start request and the actual start of the engine.

Abstract translation: 动力传动系统通过环形传递构件将动力从内燃机传递到第一和第二辅助装置。 在发出发动机起动请求之前，第一辅助装置被致动以将张紧器滑轮移动到给定位置以增加环形传动构件的张力。 因此，在发动发动机启动请求时作为发动机起动器的第一辅助装置的致动使得能够在所需时间内立即旋转发动机的驱动轴以使发动机起动。 这实现了发动机的快速启动，并且导致在发动发动机起动请求和发动机的实际启动之间的时间量的减少。

公开(公告)号：US09719430B2

公开(公告)日：2017-08-01

申请号：US14711304

申请日：2015-05-13

Applicant: DENSO CORPORATION

Inventor： Kazuaki Ueda ,  Tomoaki Nakano ,  Shigeru Maeda ,  Masataka Nishikori ,  Shuhei Oe ,  Hikaru Kokumai

IPC: F01L1/34 ,  F02D13/02 ,  F02D41/12 ,  F02D41/00 ,  F02D41/22

CPC classification number: F02D13/0219 ,  F01L1/34 ,  F02D13/0215 ,  F02D13/0269 ,  F02D41/0005 ,  F02D41/123 ,  F02D41/22 ,  F02D2013/0292 ,  F02D2041/001 ,  Y02T10/142 ,  Y02T10/42

Abstract: A control system for an internal combustion engine has an intake valve, an exhaust valve, and an exhaust purifying catalyst that purifies exhaust gas after combustion of a fuel. During a fuel cut in which no fuel is supplied, a closing timing of the intake valve is controlled to a delayed angle side more than at a timing when the fuel is supplied and to a delayed angle side more than at a timing at a bottom dead center of an intake stroke, and an opening timing of the exhaust valve is controlled to an advanced angle side more than at the timing when the fuel is supplied and to an advanced angle side more than at the timing at the bottom dead center of an expansion stroke.

公开(公告)号：US11002163B2

公开(公告)日：2021-05-11

申请号：US16718768

申请日：2019-12-18

Applicant: DENSO CORPORATION

Inventor： Genki Suzuki ,  Tomoaki Nakano

IPC: F01L1/34 ,  F01L13/08 ,  F02P5/15 ,  F02D41/40 ,  F01L13/00

Abstract: A valve timing controller for controlling a valve timing of an intake valve that opens and closes by a rotation of a camshaft to which a power is supplied from a crankshaft of an internal-combustion engine. The valve timing controller includes a phase changer changing a rotation phase for an adjustment of the valve timing; an electric actuator driving the phase changer; and a control section controlling an operation of the electric actuator, in which the control section performs a start time control process, controlling the valve timing to a rotation starter phase retarded from a preset reference phase at a start of crankshaft rotation, and controlling the valve timing to an engine started phase advanced therefrom after a passing of a top dead center in a first compression process by a piston in a cylinder after the start of crankshaft rotation and before completion of engine start.

公开(公告)号：US20200340840A1

公开(公告)日：2020-10-29

申请号：US16928078

申请日：2020-07-14

Applicant: DENSO CORPORATION

Inventor： Noboru Kitahara ,  Teruaki Kaifu ,  Tomoaki Nakano

IPC: G01F1/72 ,  G01F1/696 ,  G01F1/698

Abstract: An air flow rate measurement device includes a flow rate detection unit, a detected flow rate response compensation unit, a pulsation amplitude calculation unit, a correction value calculation unit, and an error correction unit. The flow rate detection unit detects a detected flow rate. The detected flow rate response compensation unit advances a response time of the detected flow rate and calculating a compensation flow rate which is an output obtained by compensating for a response delay of the detected flow rate. The pulsation amplitude calculation unit calculates a pulsation amplitude correlated with a pulsation amplitude in the detected flow rate. The correction value calculation unit calculates a pulsation correction value which is a value for correcting the compensation flow rate based on the pulsation amplitude. The error correction unit corrects the compensation flow rate based on the pulsation correction value.

公开(公告)号：US09328806B2

公开(公告)日：2016-05-03

申请号：US14571796

申请日：2014-12-16

Applicant: DENSO CORPORATION

Inventor： Hitoshi Noguchi ,  Hiroshi Okada ,  Shuzo Oda ,  Tomoaki Nakano ,  Yoshihiro Yamashita ,  Yousuke Yamamoto ,  Kazuhisa Hara

IPC: F16H7/22 ,  F16H7/12 ,  B60W20/00 ,  F02N15/02 ,  F16H7/08 ,  F02N11/04 ,  F02N15/08

CPC classification number: F16H7/1281 ,  B60W20/00 ,  F02N11/04 ,  F02N15/02 ,  F02N15/08 ,  F16H2007/0861 ,  F16H2007/0885 ,  Y10S903/909 ,  Y10T477/23

Abstract: A power transmission system transmits power from a drive shaft of an internal combustion engine to a first and a second auxiliary device through a belt. An auto-tensioner extends or contracts to change the tension of the belt. A controller rotates the first auxiliary device in a reverse direction to loosen the belt to cause the auto-tensioner to extend to increase the tension of the belt and calculates a reversing timing when the drive shaft will be reversed as a result of increasing of the tension of the belt. The controller inhibits the tensioner body from contracting immediately before or when the reversing time is reached to keep the tension of the belt at an increased degree, thereby eliminating the slippage of the belt on each pulley without having to finely control the operation of the first auxiliary device when the internal combustion engine is started.

Abstract translation: 动力传动系统通过皮带将动力从内燃机的驱动轴传递到第一和第二辅助装置。 自动张紧器延伸或收缩以改变皮带的张力。 控制器使第一辅助装置沿相反方向旋转以松开皮带，使自动张紧器延伸以增加皮带的张力，并计算当驱动轴由于张力增加而反转时的换向时机 的皮带。 控制器在紧急反转时间之前或之后阻止张紧器体收缩，以保持皮带的张力增加，从而消除皮带在每个滑轮上的滑动，而不必精细地控制第一辅助件的操作 内燃机启动时的装置。