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公开(公告)号：US09945272B2
公开(公告)日：2018-04-17
申请号：US15219902
申请日：2016-07-26
发明人： Yu Yokoyama , Haruhito Fujimura , Yoshiki Endo , Keisuke Hotta
CPC分类号： F01L1/3442 , F01L1/047 , F01L1/46 , F01L2001/34433 , F01L2001/3445 , F01L2250/02 , F01L2800/17
摘要： In a variable valve actuation apparatus for an internal combustion engine, a rotor of a variable valve timing mechanism is fixed to one end of a camshaft by a plurality of bolts. An oil control valve configured to control hydraulic pressure that acts on the rotor is fixed to the rotor by one or some of the plurality of bolts. For this reason, by releasing fastening of the bolt that fixes the oil control valve to the rotor among the plurality of bolts that fix the rotor to the one end of the camshaft, the oil control valve is allowed to be removed from the rotor while the rotor is fixed to the camshaft. Therefore, it is not required to perform positioning for fixing the rotor to the camshaft at the time of replacement of the oil control valve.
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公开(公告)号：US11098637B2
公开(公告)日：2021-08-24
申请号：US16580278
申请日：2019-09-24
发明人： Yoshiki Endo
摘要： A thermostat includes a valve member. The valve member has an insertion hole. The insertion hole is constituted by a first protective member and a second protective member. A shaft of a jiggle valve extends through the insertion hole. The jiggle valve has a substantially spherical head connected to an end of the shaft. The head closes the insertion hole by contacting the peripheral edge of the opening of the insertion hole. The materials of the first protective member and the second protective member each have a Vickers hardness higher than that of the valve member, which is part of the valve member other than the protective members.
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公开(公告)号：US11168589B2
公开(公告)日：2021-11-09
申请号：US16441063
申请日：2019-06-14
发明人： Yoshiki Endo
摘要： An internal combustion engine includes exhaust-side and intake-side variable valve timing mechanisms, an oil passage defined in the cylinder head, an exhaust-side connection passage that branches from the oil passage to conduct oil to the exhaust-side variable valve timing mechanism, and an intake-side connection passage that branches from the oil passage to conduct oil to the intake-side variable valve timing mechanism. The connection passage that conducts oil to one of the exhaust-side variable valve timing mechanism and the intake-side variable valve timing mechanism that has a greater amount of oil leakage when oil having the same pressure is supplied to the variable valve timing mechanisms to operate the variable valve timing mechanisms is located at a downstream side in the oil passage of the connection passage that conducts oil to the variable valve timing mechanism that has a smaller amount of oil leakage.
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公开(公告)号：US11125140B2
公开(公告)日：2021-09-21
申请号：US16880442
申请日：2020-05-21
发明人： Yoshiki Endo
摘要： An engine cooling structure includes a head gasket sitting between a bottom surface of a cylinder head and a top surface of a cylinder block, a connection water passage for coolant that connects an in-head water jacket and an in-block water jacket to each other, and a reed valve that opens and closes in correspondence with a differential pressure of coolant in the in-head water jacket and coolant in the in-block water jacket. The reed valve includes a reed portion arranged integrally with a part of the head gasket corresponding to the connection water passage.
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公开(公告)号：US11225929B2
公开(公告)日：2022-01-18
申请号：US17128202
申请日：2020-12-21
发明人： Hajime Takagawa , Yoshiki Endo
摘要： Intake and exhaust cam shafts are disposed a cylinder head in a vertical direction. The cylinder head comprises a first through hole and a second through hole. The first through hole penetrates an upper surface deck from a deck surface towards a lower surface of the cylinder head. The deck surface is a surface constituting an upper surface deck of the cylinder head. The second through hole opens to a side surface of the cylinder head in which cam pulleys of intake and exhaust cam shafts are provided. The second through hole penetrates the upper surface deck along an axial direction of the intake and exhaust cam shafts. The second through hole is positioned vertically below an opening in the deck surface of the first through hole.
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公开(公告)号：US20210222644A1
公开(公告)日：2021-07-22
申请号：US17128202
申请日：2020-12-21
发明人： Hajime Takagawa , Yoshiki Endo
摘要： Intake and exhaust cam shafts are disposed a cylinder head in a vertical direction. The cylinder head comprises a first through hole and a second through hole. The first through hole penetrates an upper surface deck from a deck surface towards a lower surface of the cylinder head. The deck surface is a surface constituting an upper surface deck of the cylinder head. The second through hole opens to a side surface of the cylinder head in which cam pulleys of intake and exhaust cam shafts are provided. The second through hole penetrates the upper surface deck along an axial direction of the intake and exhaust cam shafts. The second through hole is positioned vertically below an opening in the deck surface of the first through hole.
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公开(公告)号：US20180179944A1
公开(公告)日：2018-06-28
申请号：US15839969
申请日：2017-12-13
发明人： Yoshiki Endo
摘要： A cooling system for an internal combustion engine includes a thermostat device including: a first inflow port connected with a second outflow passage; a second inflow port connected with a third outlet passenger; a valve controlling a flow rate of the coolant from the radiator, a thermostatic element that opens and closes the valve according to a temperature of the coolant; an outflow portion through which the coolant flows to the internal combustion engine; a guide portion that guides the coolant flowing through the second inflow port toward the thermostatic element; a slit flowing out the coolant to the outflow portion from between the guide portion and the thermostatic element; and an electric water pump configured to circulate a coolant.
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