公开(公告)号：US10253678B2

公开(公告)日：2019-04-09

申请号：US15408825

申请日：2017-01-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Rihito Kaneko ,  Noboru Takagi ,  Isao Takagi ,  Takashi Matsutani ,  Naoto Hisaminato ,  Mitsuru Yamaguchi ,  Hirokazu Ando

IPC: F01P7/16 ,  F02B75/22 ,  F01P7/14

Abstract: An engine cooling apparatus includes a mechanical water pump having a suction hole and N discharge holes (N is an integer not less than two), N water jackets that are arranged in an engine and correspond to the N discharge holes, N joint passages, each of which joins one of the N discharge holes to the associated water jacket, a return passage that returns coolant to the suction hole after the coolant has passed through the N water jackets and has merged in a merging portion, a coolant stopping mechanism that blocks return flow of coolant through the return passage, and N communication passages each of which allows the corresponding one of the N joint passages to communicate with the suction hole while bypassing the N water jackets and the coolant stopping mechanism.

公开(公告)号：US11802521B1

公开(公告)日：2023-10-31

申请号：US18314498

申请日：2023-05-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuki Akimoto ,  Takashi Matsutani ,  Kou Shirakigawa

IPC: F02F1/14

CPC classification number: F02F1/14

Abstract: A cylinder block includes a water jacket surrounding a cylinder of an internal combustion engine and a water jacket spacer disposed inside the water jacket. In the cylinder block, a direction toward a center of the cylinder in a radial direction of the cylinder is defined as an inner side. A direction away from the center in the radial direction of the cylinder is defined as an outer side. The water jacket spacer includes a spacer plate and a conversion portion protruding from the spacer plate in the radial direction. The conversion portion has an action surface on which a pressure of coolant flowing through the water jacket acts. The conversion portion converts a force applied to the action surface by the pressure of the coolant into a force pushing the spacer plate toward the inner side.

公开(公告)号：US10267208B2

公开(公告)日：2019-04-23

申请号：US15329885

申请日：2015-07-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masahito Kudo ,  Takashi Matsutani

IPC: F01P3/02 ,  F02F1/24 ,  F02B77/08 ,  F01P11/16 ,  F02F1/40 ,  F01P3/12 ,  F02F1/14 ,  F02F1/42

Abstract: A cooling structure of an engine includes a cylinder head and a coolant temperature sensor. The cylinder head gas a first water jacket for cooling a combustion chamber and a second water jacket for cooling an exhaust manifold. The cylinder head includes a joining portion where coolants from the first water jacket and the second water jacket join together. The joining portion has a first coolant passage. A second coolant passage is disposed downstream of the joining portion. The temperature sensing portion is disposed in the second coolant passage. A coolant outlet of the second water jacket is defined in the first coolant passage, and is located at a position on the cylinder head cover attachment surface side in the first coolant passage. The temperature sensing portion is located at a position on the cylinder block attachment surface side in the second coolant passage.