Other

Shanghai Jiao Tong University

Yaofu Jiang

Wenjiang Ding

Liming Peng

Yongkui Zhu

Penghuai Fu

The invention provides a friction-welded structure assembly, comprising a first workpiece (B), a second workpiece (C) and a friction welding connecting part (A). The lower side of the friction welding connecting part (A) has a first friction welding junction interface (H) which is in contact with a surface of the first workpiece (B) and a second friction welding junction interface (H) which is in contact with a surface of the second workpiece (C). The friction welding connecting part (A) is tightly pressed on both the first workpiece (B) and the second workpiece (C) which are positioned to be relatively corresponding and fixed to each other, while being moved under a pressure, so as to heat said first friction welding junction interface (H) and said second friction welding junction interface (H), then said friction welding connecting part (A) is stopped under the pressure, and said first friction welding junction interface (H) and said second friction welding junction interface (H) become cool, thereby said first workpiece (B) and said second workpiece (C) are welded together to form the friction-welded structure assembly via said friction welding connecting part (A). Also, The invention relates to a water-cooled internal combustion engine cylinder head using the friction-welded structure assembly described above.

Friction-welded structure assembly, water-cooled internal combustion engine cylinder head, water-cooled internal combustion engine and machine equipped with same

A cylinder head is prepared by integrating an upper cylinder head part and a lower cylinder head part, which are manufactured separately, into the whole, wherein the fuel injector receiving hole, the intake valve stem receiving hole and the exhaust valve stem receiving hole are respectively prepared by integrating their upper portions which are formed together with the upper cylinder head part and their lower portions which are formed together with the lower cylinder head part respectively; the intake duct and the exhaust duct are formed in the lower cylinder head part; the cylinder head water cavity is prepared by integrating an upper water cavity portion formed together with the upper cylinder head part and a lower water cavity portion formed together with the lower cylinder head part into the whole, alternatively, the cylinder head water cavity is formed, as a whole, with the lower cylinder head part.

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Jiangsu, China

Yaofu Jiang