公开(公告)号：US20230349307A1

公开(公告)日：2023-11-02

申请号：US18187348

申请日：2023-03-21

Applicant: MAZDA MOTOR CORPORATION

Inventor： Takashi KASHIWABARA ,  Yuki TSUKAGOSHI

IPC: F01M13/04

CPC classification number: F01M13/0416

Abstract: A blowby gas return apparatus is provided that achieves inhibition of condensation of water vapor in blowby gas in branched return passages. A blowby gas return apparatus that returns blowby gas generated in an engine having a plurality of cylinders to an intake system of the engine includes a distribution portion inside a head cover of the engine, and distributes the blowby gas to intake paths of the cylinders. The distribution portion includes an introduction portion through which the blowby gas is introduced and a plurality of branch passages communicating with the introduction portion, plurality of branch passages branching from the introduction portion to communicate with the intake paths.

公开(公告)号：US20170152777A1

公开(公告)日：2017-06-01

申请号：US15332015

申请日：2016-10-24

Applicant: MAZDA MOTOR CORPORATION

Inventor： Takashi KASHIWABARA ,  Kouichi SHIMIZU

IPC: F01M13/04 ,  F02D41/00 ,  F02M35/104 ,  F01M13/00 ,  F02M25/06 ,  F02M35/10

CPC classification number: F01M13/04 ,  F01M13/0011 ,  F02D41/0025 ,  F02D2250/08 ,  F02M25/06 ,  F02M35/10222 ,  F02M35/104

Abstract: A blow-by gas recirculating apparatus includes: an oil separator provided to a side surface of a cylinder block at one side of an engine; a communication part providing communication between a blow-by gas outlet port of the oil separator and an intake manifold; and a PCV valve. The PCV valve is provided to the intake manifold, and the communication part is connected to the PCV valve. The PCV valve provided to the intake manifold is positioned above the blow-by gas outlet port of the oil separator with the engine mounted on a vehicle.

公开(公告)号：US20180274407A1

公开(公告)日：2018-09-27

申请号：US15756853

申请日：2017-03-14

Applicant: MAZDA MOTOR CORPORATION

Inventor： Takashi KASHIWABARA ,  Tsuyoshi YAMAMOTO ,  Yasushi NAKAHARA ,  Kouichi SHIMIZU

IPC: F01M9/10 ,  F01L1/047 ,  F01L13/00

CPC classification number: F01M9/102 ,  F01L1/047 ,  F01L13/0036 ,  F01L2013/0052 ,  F01L2810/02 ,  F01M1/06 ,  F01M9/10 ,  F01M9/105

Abstract: An oil supply path passes through members separate from a cylinder head (4) to supply a lubricant to bearings (73, 74) of camshaft journals. The oil supply path includes an oil supply passage (66) for the camshaft above the camshaft (19, 20), a connection passage (64) for the camshaft between the oil supply passage for the camshaft and an internal passage (61, 62) in the cylinder head (4), and branch oil passages (68) for the camshaft journals. Each branch oil passage branches off from the oil supply passage for the camshaft, and is connected to one of the bearings (73, 74) from above. Each of the branch passages includes a throttle (168) with a smaller cross-sectional flow area than the oil supply passage for the camshaft.

公开(公告)号：US20150075468A1

公开(公告)日：2015-03-19

申请号：US14460290

申请日：2014-08-14

Applicant: MAZDA MOTOR CORPORATION

Inventor： Akitomo TAKAGI ,  Toshimasa KOTANI ,  Shunsuke HABARA ,  Takashi KASHIWABARA

IPC: F01L1/344 ,  F01L1/08

CPC classification number: F01L1/344 ,  F01L1/08 ,  F01L13/0036 ,  F01L2013/0052 ,  F01L2820/031

Abstract: A cam element portions is configured such that respective maximum lift portions (lift ending points) of both-side end-face cams thereof are provided at respective phases which are different from each other in a rotational direction and that a maximum value of a length, in an axial direction, between respective cam faces of the both-side end-face cams which are provided at the same phase is set to be a distance, in the axial direction, between a first operational member and a second operational member or smaller. Accordingly, in a valve gear of an engine in which cams operative to control opening/closing of a valve are switchable, it can be properly prevented that a camshaft locks and stop rotating because of an operational malfunction of an operational member or the like.

Abstract translation: 凸轮元件部分被构造成使得其两侧端面凸轮的相应的最大提升部分（提升终点）设置在沿旋转方向彼此不同的各个相位处，并且长度的最大值， 在轴向方向上，设置在相同相位的两侧端面凸轮的相应凸轮面之间在轴向方向上设置在第一操作构件和第二操作构件之间的距离以下。 因此，在可操作地控制阀的打开/关闭的凸轮的发动机的阀齿轮是可切换的情况下，可以适当地防止由于操作构件等的操作故障而使凸轮轴锁定并停止转动。

公开(公告)号：US20150075467A1

公开(公告)日：2015-03-19

申请号：US14460284

申请日：2014-08-14

Applicant: MAZDA MOTOR CORPORATION

Inventor： Toshimasa KOTANI ,  Akitomo TAKAGI ,  Shunsuke HABARA ,  Takashi KASHIWABARA

IPC: F01L1/344 ,  F01L1/08

CPC classification number: F01L1/344 ,  F01L1/08 ,  F01L13/0036 ,  F01L2013/0052 ,  F01L2820/031

Abstract: A cam element portion comprises a slant portion (reverse-rotation return slope portion), which is positioned on a rotary-delay side from a maximum-lift portion (lift ending point) of an end-face cam and slants inward toward the rotary-delay side from an outer peripheral face of the end-face cam. Accordingly, in a valve gear of an engine in which cams operative to control opening/closing of a valve are switchable, it can be properly prevented that the cam element portion is switched unexpectedly and improperly or an operational member breaks down which are possibly caused by an engine's reverse rotation.

Abstract translation: 凸轮元件部分包括从端面凸轮的最大提升部分（提升终点）位于旋转延迟侧的倾斜部分（反转回转斜面部分），并向内倾斜向旋转延伸部分 从端面凸轮的外周面延伸。 因此，在其中可操作以控制阀的打开/关闭的凸轮的发动机的阀齿轮是可切换的，可以适当地防止凸轮元件部分意外地和不正确地切换或操作构件分解，这可能是由 发动机反向旋转。