摘要:
There is provided a production method for a titanium-alloy connecting rod that ensures high rigidity of a cutting tool. One embodiment of the present invention provides a production method for a titanium-alloy connecting rod (1) in which a rod portion (33) and a cap portion (34) of a big end (30) are fixed by using a bolt (40). The production method for the titanium-alloy connecting rod (1) includes a step of forming a bolt hole (32) for the bolt (40) to extend therethrough. The step of forming the bolt hole (32) includes: forming a first hole (61) in the cap portion (34) and the rod portion (33) in a direction from the cap portion (34) toward the rod portion (33); and forming a second hole (62) in the rod portion (33) in a direction from the rod portion (33) toward the cap portion (34). Once the first and second holes are formed, the first hole (61) and the second hole (62) communicate with each other. The longitudinal direction (LD2) of a cutting tool (52) used for forming the second hole (62) is inclined with respect to the longitudinal direction (y) of the rod main body (10) of the titanium-alloy connecting rod (1).
摘要:
A cooling apparatus includes a cooling passage provided in an internal combustion engine, a water pump, a radiator, a first passage through which the water pump and the cooling passage are connected to each other, a second passage through which the cooling passage and the radiator are connected to each other, a third passage through which the radiator and the water pump are connected to each other, and an oil cooler passage provided with an oil cooler. An in-line type thermostat is provided at any position in a portion of a cooling water circuit which leads from a first end portion to a second end portion via the second passage, the radiator, and the third passage.
摘要:
There is provided a fracture-split type titanium-alloy connecting rod exhibiting good reassemblability and a production method thereof. A connecting rod (1) is a split-type connecting rod made of a titanium alloy, including a rod main body (10), a small end (20) provided at one end of the rod main body, and a big end (30) provided at another end of the rod main body, the big end being fracture-split into a rod portion (33) continuing from the other end of the rod main body and a cap portion (34) for coupling to the rod portion with a bolt (40). The rod portion and/or the cap portion include at least one rising portion (SP) protruding from an edge of a fractured surface (F).
摘要:
The anti-seizing property of a small end (20) of a titanium-alloy connecting rod (1) is suitably improved. A connecting rod (1) made of a titanium alloy includes a rod main body (10), a small end (20) provided at one end of the rod main body, and a big end (30) provided at another end of the rod main body. The connecting rod further includes a chromium nitride layer (50) formed at least on an inner peripheral surface (20i) of the small end.
摘要:
A cooling apparatus includes a cooling passage provided in an internal combustion engine, a water pump, a radiator, a first passage through which the water pump and the cooling passage are connected to each other, a second passage through which the cooling passage and the radiator are connected to each other, a third passage through which the radiator and the water pump are connected to each other, and an oil cooler passage provided with an oil cooler. An in-line type thermostat is provided at any position in a portion of a cooling water circuit which leads from a first end portion to a second end portion via the second passage, the radiator, and the third passage.
摘要:
A cooling apparatus 50 includes a cooling passage 80 and an introduction passage 71. The cooling passage 80 includes: a cylinder head cooling passage 81 provided in a cylinder head 26; a cylinder body cooling passage 82 provided in a cylinder body 24; and a connection passage 83 through which the cylinder head cooling passage 81 and the cylinder body cooling passage 82 are connected to each other. The introduction passage 71 is provided in the cylinder body 24 and arranged to guide cooling water from a water pump 52 to the cylinder head cooling passage 81.
摘要:
A cooling apparatus 50 includes a cooling passage 80 and an introduction passage 71. The cooling passage 80 includes: a cylinder head cooling passage 81 provided in a cylinder head 26; a cylinder body cooling passage 82 provided in a cylinder body 24; and a connection passage 83 through which the cylinder head cooling passage 81 and the cylinder body cooling passage 82 are connected to each other. The introduction passage 71 is provided in the cylinder body 24 and arranged to guide cooling water from a water pump 52 to the cylinder head cooling passage 81.
摘要:
A motorcycle includes: an internal combustion engine 20 including a cylinder body 24 and a cylinder head 26; a water passage which is provided inside the internal combustion engine 20 and through which cooling water flows; a radiator 54 disposed forward of the internal combustion engine 20; exhaust pipe connection ports 97 provided at a front surface of the cylinder head 26; an outlet 80o which is provided at a front surface of the cylinder body 24 and through which the cooling water flows out from the water passage; exhaust pipes 101 to 103 connected to the exhaust pipe connection ports 97; and water piping connected to the outlet 80o and the radiator 54.