公开(公告)号：US20190242294A1

公开(公告)日：2019-08-08

申请号：US16386259

申请日：2019-04-17

Applicant: Dalian University of Technology

Inventor： Wuqiang Long ,  Shuang He ,  Jiangping Tian ,  Hua Tian ,  Baoguo Du ,  Liyan Feng ,  Yao Fu ,  Ping Yi

IPC: F02B23/06 ,  F02F3/26 ,  F02F3/24

Abstract: A diesel engine includes a cylinder head, a cylinder sleeve, a piston, an injector, and a combustion chamber. The top side of the piston includes an annular top surface, an annular collision belt and an annular cavity. The collision belt includes a collision surface, an upper guide surface, and a lower guide surface. An annular throat is formed between the upper guide surface and the cylinder head. The collision belt divides the combustion chamber into a headspace and a central portion. The volume of the headspace is more than three times of the volume of the central portion. A major portion of the fuel jet injected by the injector is directed into the headspace. The results are faster mixing of fuel and air and complete combustion in the combustion chamber, and a reduction of fuel consumption rate by 2%. A method for fuel distribution and combustion is also disclosed.

公开(公告)号：US10662866B2

公开(公告)日：2020-05-26

申请号：US16386259

申请日：2019-04-17

Applicant: Dalian University of Technology

Inventor： Wuqiang Long ,  Shuang He ,  Jiangping Tian ,  Hua Tian ,  Baoguo Du ,  Liyan Feng ,  Yao Fu ,  Ping Yi

IPC: F02B23/06 ,  F02F3/26 ,  F02F3/24

Abstract: A diesel engine includes a cylinder head, a cylinder sleeve, a piston, an injector, and a combustion chamber. The top side of the piston includes an annular top surface, an annular collision belt and an annular cavity. The collision belt includes a collision surface, an upper guide surface, and a lower guide surface. An annular throat is formed between the upper guide surface and the cylinder head. The collision belt divides the combustion chamber into a headspace and a central portion. The volume of the headspace is more than three times of the volume of the central portion. A major portion of the fuel jet injected by the injector is directed into the headspace. The results are faster mixing of fuel and air and complete combustion in the combustion chamber, and a reduction of fuel consumption rate by 2%. A method for fuel distribution and combustion is also disclosed.

公开(公告)号：US10563569B2

公开(公告)日：2020-02-18

申请号：US15865296

申请日：2018-01-09

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Wuqiang Long ,  Hua Tian ,  Jiangping Tian ,  Yao Fu ,  Jingchen Cui ,  Kai Sheng ,  Ping Yi ,  Kunpeng Qi ,  Qiang Zhang ,  Yicong Wang

IPC: F02B23/06 ,  F02F1/24 ,  F02F3/28 ,  F02B1/12

Abstract: A diesel combustion system including a piston, an annular impinging block, and a combustion chamber. The combustion chamber is divided by the annular impinging block into an upper chamber and a lower chamber. The annular impinging block includes a lower guide surface that is adjacent to the lower chamber and that extends from a trough line connected to the piston to a crest line. The ratios among the inner diameter of the top of the piston, the outer diameter of the top of the piston, the diameter of the trough line, and the diameter of the crest line define the shape of the combustion chamber which leads to increased rate of combustion, reduced soot emission, and increased fuel efficiency.