Patents by Inventor Wuqiang Long

Wuqiang Long has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10662866
    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.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: May 26, 2020
    Assignee: Dalian University of Technology
    Inventors: Wuqiang Long, Shuang He, Jiangping Tian, Hua Tian, Baoguo Du, Liyan Feng, Yao Fu, Ping Yi
  • Patent number: 10563569
    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.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: February 18, 2020
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Wuqiang Long, Hua Tian, Jiangping Tian, Yao Fu, Jingchen Cui, Kai Sheng, Ping Yi, Kunpeng Qi, Qiang Zhang, Yicong Wang
  • Publication number: 20190242294
    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.
    Type: Application
    Filed: April 17, 2019
    Publication date: August 8, 2019
    Inventors: Wuqiang Long, Shuang He, Jiangping Tian, Hua Tian, Baoguo Du, Liyan Feng, Yao Fu, Ping Yi
  • Patent number: 10060308
    Abstract: A modularized multifunctional variable valve actuation system for use in a six-cylinder internal combustion engine. The system includes two fuel supply modules that cooperate with two two-way two-position valves for implementing a continuously variable valve event, and that cooperate with two three-way two-position valves and one two-way two-position valve for implementing a fully variable valve event.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: August 28, 2018
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Jingchen Cui, Wuqiang Long, Jiangping Tian, Hua Tian, Tianhao Yang, Danting Wang
  • Publication number: 20180128158
    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.
    Type: Application
    Filed: January 9, 2018
    Publication date: May 10, 2018
    Inventors: Wuqiang LONG, Hua TIAN, Jiangping TIAN, Yao FU, Jingchen CUI, Kai SHENG, Ping YI, Kunpeng QI, Qiang ZHANG, Yicong WANG
  • Publication number: 20170009618
    Abstract: A modularized multifunctional variable valve actuation system for use in a six-cylinder internal combustion engine. The system mainly comprises fuel supply modules (5 and 6), a phase limiting module (2), a mode selection module (22), control modules (3 and 4), a fuel transfer module (7), and a valve actuation module (1). The phase limiting module (2), with an extremely simple structure, implements a valve closing process not limited by operational phases of the fuel supply modules (5 and 6), and at the same time, requires only two fuel supply modules (5 and 6) and two two-way two-position valves (141, 142, and 143) to implement a continuously variable valve event, and requires only two fuel supply modules (5 and 6), two three-way two-position valves (191, 192, and 193), and one two-way two-position valve (141, 142, and 143) to implement a fully variable valve event, thus greatly reducing costs.
    Type: Application
    Filed: March 10, 2014
    Publication date: January 12, 2017
    Inventors: Jingchen CUI, Wuqiang LONG, Jiangping TIAN, Hua TIAN, Tianhao YANG, Danting WANG
  • Publication number: 20160363042
    Abstract: A combustion chamber of diesel engine. The diesel engine includes a cylinder head, a cylinder sleeve, and a piston. The cylinder head, the cylinder sleeve, and the piston form the combustion chamber. The combustion chamber includes a headspace; a central part; and a collision belt. The collision belt includes a collision surface, an upper guide surface, and a lower guide surface. The collision belt is configured to connect the headspace and the central part. The collision surface is an inclined surface, a convex surface, or a concave surface. The first tapered surface includes a second inclined surface, a second curved surface, and a third inclined surface; the second tapered surface includes a fourth inclined surface, a third curved surface, and a second concave surface; the first curved surface includes a second convex surface and a third concave surface.
    Type: Application
    Filed: August 24, 2016
    Publication date: December 15, 2016
    Inventors: Wuqiang LONG, Shuang HE, Jiangping TIAN, Hua TIAN, Baoguo DU, Liyan FENG, Yao FU, Ping YI
  • Publication number: 20150053172
    Abstract: A diesel combustion system including an injector and a combustion chamber. The combustion chamber is formed by a cylinder head, a cylinder liner, and a piston. The combustion chamber includes an upper layer and a lower layer. The diameter D1 of the upper layer is larger than the diameter D2 of the lower layer. A junction of the upper layer and the lower layer is provided with an impinging block for rebounding the diesel fuel spray. The impinging block includes an impinging surface, an upper guide surface, and a lower guide surface. When in use, part of the diesel fuel spray is rebounded by the impinging surface, and part of the diesel fuel spray is diffused along the upper guide surface and the lower guide surface of the impinging block to achieve double-layered split flow of the diesel fuel.
    Type: Application
    Filed: October 31, 2014
    Publication date: February 26, 2015
    Inventors: Wuqiang LONG, Kunpeng QI, Jiangping TIAN, Qiang ZHANG, Kai SHENG, Ping YI, Yicong WANG, Yao FU
  • Publication number: 20130104850
    Abstract: A multi-fuel pre-mixed combustion system of an internal combustion engine includes a main fuel spray nozzle (2), which injects a mixed fuel of compression-ignition-suitable fuels, spark-ignition-suitable fuel, or a wide cut fuel to form a homogeneous primary pre-mixed gas. An auxiliary spray nozzle (4) injects a spark-ignition-suitable fuel to form a secondary mixed gas, which is ignited by the spark plug (3) by means of spray guiding or an ignition chamber (5), and the primary pre-mixed gas in the combustion chamber (1) is compression ignited. Consequently, the ignition point of the primary mixed gas is effectively controlled and knock is avoided, and a homogeneous pre-mixed compression ignition is achieved over the whole range of operating conditions. The combustion rate is controlled by exhaust gas recirculation or spray of water into a cylinder or intake port, and high thermal efficiency is ensured by a high expansion ratio.
    Type: Application
    Filed: June 22, 2011
    Publication date: May 2, 2013
    Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Wuqiang Long, Jiangping Tian, Xianyin Leng, Kunpeng Qi, Kai Sheng, Quan Dong