公开(公告)号：US20190178122A1

公开(公告)日：2019-06-13

申请号：US16214263

申请日：2018-12-10

Applicant: KOJIMA INDUSTRIES CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takuya SUZUKI ,  Hirotaka MATSUDA ,  Naoya TAMURA ,  Masami ISHIKAWA ,  Tomoki NAKAMURA

IPC: F01M13/04

Abstract: An oil separator for trapping oil mist contained in blow-by gas includes a separation plate, an upstream oil-mist trapping chamber, and a downstream oil-mist trapping chamber. The upstream and downstream oil-mist trapping chambers are divided by the separation plate. The upstream oil-mist trapping chamber communicates with a flow inlet for blow-by gas. The downstream oil-mist trapping chamber communicates with the upstream oil-mist trapping chamber and communicates with a flow outlet for blow-by gas. A return port formed through the separation plate returns oil mist trapped in the downstream oil-mist trapping chamber into the upstream oil-mist trapping chamber. The return port is positioned vertically above the bottom surface of the upstream oil-mist trapping chamber and is positioned at substantially the same vertical level as the lowermost portion of the bottom surface of the downstream oil-mist trapping chamber.

公开(公告)号：US20190234261A1

公开(公告)日：2019-08-01

申请号：US16240829

申请日：2019-01-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masami ISHIKAWA ,  Shigeru SHIBANUMA

IPC: F01M13/02 ,  F02M25/06 ,  F02M35/10

Abstract: A blow-by gas treatment device causes blow-by gas in a space defined by a cylinder head and a head cover in an internal combustion engine to flow back into an intake pipe. The blow-by gas treatment device includes a pipe joint and a blow-by gas pipe connected to the intake pipe. The pipe joint includes a basal end connected to the head cover, a distal end, a sensor-connected part connected to the pressure sensor, and a constriction located closer to the basal end than the sensor-connected part. The blow-by gas pipe is connected to a position of the pipe joint closer to the distal end than the sensor-connected part.

公开(公告)号：US20250084808A1

公开(公告)日：2025-03-13

申请号：US18819227

申请日：2024-08-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masami ISHIKAWA

IPC: F02M25/06 ,  F01M13/04

Abstract: The blow-by gas recirculation device includes first to third passages and first and second check valves. The first to third passages respectively connect a portion of an intake passage downstream of a throttle valve, connect a portion of the intake passage downstream of an intercooler, and connect a portion of the intake passage upstream of a compressor to an interior of the crankcase. In the first passage, a first check valve is configured to permit a flow of gas from the interior of the crankcase to the intake passage and restrict a flow of gas from the intake passage to the interior of the crankcase. In the second passage, the second check valve is configured to permit a flow of gas from the intake passage to the interior of the crankcase and restrict a flow of gas from the interior of the crankcase to the intake passage.

公开(公告)号：US20240125392A1

公开(公告)日：2024-04-18

申请号：US18458320

申请日：2023-08-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masami ISHIKAWA

IPC: F16K1/38 ,  F01M13/00 ,  F16K27/02

CPC classification number: F16K1/38 ,  F01M13/0011 ,  F16K27/0254

Abstract: A flow rate control valve is configured to adjust a flow rate of blow-by gas drawn into an intake passage from a crankcase of an internal combustion engine that uses hydrogen as fuel. The flow rate control valve includes a flow rate adjuster having a valve member. The flow rate adjuster has a cross-sectional flow area in a section through which the blow-by gas passes. The cross-sectional flow area is changed in accordance with movement of the valve member. The flow rate control valve is configured such that the cross-sectional flow area is maximized when a load on the internal combustion engine is less than or equal to that in an idling operation state.

公开(公告)号：US20230287814A1

公开(公告)日：2023-09-14

申请号：US18146469

申请日：2022-12-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masami ISHIKAWA

IPC: F01M13/04 ,  F02M35/10 ,  F02M25/06

CPC classification number: F01M13/0416 ,  F02M25/06 ,  F02M35/10222 ,  F01M2013/0038

Abstract: The internal combustion engine includes a second separator, a connection pipe, and a pressure sensor. Inside the second separator, a main chamber located in the cylinder head cover, and a first sub-chamber and a second sub-chamber located in a joint portion located outside the cylinder head cover are formed. The first sub-chamber and the second sub-chamber are partitioned by partition walls. A communication hole connecting the first sub-chamber and the second sub-chamber is formed in the partition wall. The first sub-chamber is connected to the main chamber via a throttle portion. A first connection port connected to the first sub-chamber and a second connection port connected to the second sub-chamber are formed in the joint portion. The first connection port is connected to the intake passage via a connection pipe. The second connection port is connected to the pressure sensor.

公开(公告)号：US20200263577A1

公开(公告)日：2020-08-20

申请号：US16733345

申请日：2020-01-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masami ISHIKAWA

IPC: F01M13/04 ,  F16B31/00

Abstract: A blow-by gas treatment device for an internal combustion engine includes: a positive crankcase ventilation (PCV) separator configured to be fastened to the internal combustion engine with a plurality of bolts; and one of a single sealant or a plurality of sealants configured to seal gas leakage of blow-by gas from a gap between the internal combustion engine and the PCV separator; wherein the plurality of bolts includes at least one break head bolt and three or more unbreakable head bolts, the unbreakable head bolt being a bolt in which a bolt head is not separated even when a fastening torque corresponding to a tightening torque applied to the break head bolt is applied to the bolt head.

公开(公告)号：US20250116215A1

公开(公告)日：2025-04-10

申请号：US18885936

申请日：2024-09-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masami ISHIKAWA ,  Tomoya Oshima ,  Yukio Koseki

IPC: F01M13/02 ,  F01M13/00 ,  F02D9/10

Abstract: A first passage communicating a portion downstream side of the compressor in the intake passage and an upstream side of the intercooler with the crankcase, a second passage communicating a portion downstream of the intercooler in the intake passage with the crankcase, and a third passage communicating a portion upstream of the compressor in the intake passage with the crankcase are installed in the turbocharged engine, and a switching valve for switching between a state in which the first passage communicates and the second passage is blocked, and a state in which the first passage is blocked and the second passage communicates is provided.

公开(公告)号：US20210131345A1

公开(公告)日：2021-05-06

申请号：US17011973

申请日：2020-09-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masami ISHIKAWA

IPC: F02B39/14 ,  F01M11/02 ,  F01M13/00 ,  F01M11/00 ,  F01M11/12 ,  F01M13/04 ,  B01D45/08

Abstract: A vehicular internal combustion engine is equipped with a supercharger, a drain pipe for draining lubricating oil in the supercharger, a cylinder block including a first oil passage, and a PCV separator including a second oil passage connected to an outlet of the drain pipe and an inlet of the first oil passage.

公开(公告)号：US20190234262A1

公开(公告)日：2019-08-01

申请号：US16240837

申请日：2019-01-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masami ISHIKAWA

IPC: F01M13/02 ,  F02M25/06 ,  F02M35/10 ,  F02B75/22

CPC classification number: F01M13/021 ,  F02B75/22 ,  F02M25/06 ,  F02M35/10222 ,  F02M35/1038

Abstract: A blow-by gas treatment device includes a first blow-by gas pipe, a second blow-by gas pipe, a first pipe joint located on a first head cover, the first blow-by gas pipe being connected to the first pipe joint, a second pipe joint located on a second head cover, the second blow-by gas pipe being connected to the second pipe joint, a first union located on the first pipe joint, a second union located on the second pipe joint, and a pressure sensor connected to the first pipe joint by the first union and connected to the second pipe joint by the second union.

公开(公告)号：US20220307398A1

公开(公告)日：2022-09-29

申请号：US17701262

申请日：2022-03-22

Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Chiaki HIRAMATSU ,  Masami ISHIKAWA

IPC: F01M13/04 ,  B01D45/08 ,  B01D45/06

Abstract: An oil separator for an internal combustion engine includes a case and a separation wall. The case includes inflow ports into which blow-by gas flows, a gas outflow port, and an oil discharge port. An inside of the case is divided by the separation wall into an upstream passage and a downstream passage. The downstream passage is located on the upper side of the upstream passage. The inflow ports and the oil discharge port are connected to the upstream passage. The gas outflow port is connected to the downstream passage. The inflow ports and the oil discharge port are arranged in a direction intersecting the vertical direction. The separation wall includes one connection passage that connects the upstream passage to the downstream passage on the upper side of the oil discharge port. The separation wall is located on the upper side of the inflow ports.