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公开(公告)号：US11454203B2
公开(公告)日：2022-09-27
申请号：US17564589
申请日：2021-12-29
Applicant: Harbin Engineering University
Inventor： Long Liu , Shihai Liu , Dai Liu , Jian Zhang , Yue Wu , Chen An , Qihao Mei , Wang Yang
Abstract: The present disclosure provides an apparatus for testing spray and combustion performance of an internal-combustion engine based on a rapid compression-expansion machine, which belongs to the testing field of internal-combustion engines. It includes a driving mechanism, a transmission mechanism, an engine cylinder, an air intake system and an exhaust system. The engine cylinder includes a piston, a cylinder block, a dual-fuel cylinder head and a multi-injector assembly. The piston is disposed in the cylinder block. The driving mechanism is connected with the piston through the transmission mechanism and drives the piston to linearly move back and forth along a vertical direction of the cylinder block. The dual-fuel cylinder head is connected to an upper part of the cylinder block. The multi-fuel injection assembly includes a plurality of injectors. The plurality of injectors are of the same type and are all disposed on the dual-fuel cylinder head.
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公开(公告)号：US20220120250A1
公开(公告)日：2022-04-21
申请号：US17564589
申请日：2021-12-29
Applicant: Harbin Engineering University
Inventor： Long Liu , Shihai Liu , Dai Liu , Jian Zhang , Yue Wu , Chen An , Qihao Mei , Wang Yang
Abstract: The present disclosure provides an apparatus for testing spray and combustion performance of an internal-combustion engine based on a rapid compression-expansion machine, which belongs to the testing field of internal-combustion engines. The present disclosure solves the problems that the existing test of the internal-combustion engine testing apparatus having a complex structure, is poor in adaptability, cannot be observed easily, and cannot meet the requirements of multi-fuel injection and multi-injection-pressure tests. It includes a driving mechanism, a transmission mechanism, an engine cylinder, an air intake system and an exhaust system. The engine cylinder includes a piston, a cylinder block, a dual-fuel cylinder head and a multi-injector assembly. The piston is disposed in the cylinder block. The driving mechanism is connected with the piston through the transmission mechanism and drives the piston to linearly move back and forth along a vertical direction of the cylinder block. The dual-fuel cylinder head is connected to an upper part of the cylinder block. The multi-fuel injection assembly includes a plurality of injectors. The plurality of injectors are of the same type and are all disposed on the dual-fuel cylinder head. The upper part of the cylinder block is transversely provided with an air intake and an exhaust port, and the air intake and the exhaust port are perpendicular to a moving direction of the piston. It is mainly used for testing the combustion performance.
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3.发明申请公开(公告)号：US20220120636A1
公开(公告)日：2022-04-21
申请号：US17564558
申请日：2021-12-29
Applicant: Harbin Engineering University
Inventor： Long Liu , Yue Wu , Dai Liu , Qian Xiong , Xinru Shi , Shihai Liu , Chen An , Qihao Mei
Abstract: The disclosure is an engine simulation test device capable of realizing an ultrahigh compression temperature and pressure, belonging to the field of a diesel engine high-temperature and high-pressure system, solving the problems that the existing engine simulation test cannot achieve ultra-high compression temperature and pressure, and the temperature and pressure are not adjustable. It includes a compressed air inlet mechanism, a nitrogen gas inlet mechanism, a pressure stabilizing mechanism, a cyclic heating mechanism, an air inlet mechanism and a fast compressor mechanism. The compressed air inlet mechanism and the nitrogen gas inlet mechanism are both connected with a gas inlet end of a pressure stabilizing tank in the pressure stabilizing mechanism, the compressed air inlet mechanism and the nitrogen gas inlet mechanism respectively introduce air and nitrogen gas into the pressure stabilizing tank, the pressure stabilizing tank is connected with the cyclic heating mechanism, the cyclic heating mechanism heats gas in the pressure stabilizing tank, a gas outlet end of the pressure stabilizing tank is connected with the fast compressor mechanism, and the air inlet mechanism is connected between the pressure stabilizing tank and the fast compressor mechanism. The device is mainly used for an engine simulation test.
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4.发明授权公开(公告)号：US11959826B2
公开(公告)日：2024-04-16
申请号：US17564558
申请日：2021-12-29
Applicant: Harbin Engineering University
Inventor： Long Liu , Yue Wu , Dai Liu , Qian Xiong , Xinru Shi , Shihai Liu , Chen An , Qihao Mei
Abstract: The disclosure is an engine simulation test device capable of realizing an ultrahigh compression temperature and pressure, belonging to the field of a diesel engine high-temperature and high-pressure system, solving the problems that the existing engine simulation test cannot achieve ultra-high compression temperature and pressure, and the temperature and pressure are not adjustable. It includes a compressed air inlet mechanism, a nitrogen gas inlet mechanism, a pressure stabilizing mechanism, a cyclic heating mechanism, an air inlet mechanism and a fast compressor mechanism. The compressed air inlet mechanism and the nitrogen gas inlet mechanism are both connected with a gas inlet end of a pressure stabilizing tank in the pressure stabilizing mechanism, the compressed air inlet mechanism and the nitrogen gas inlet mechanism respectively introduce air and nitrogen gas into the pressure stabilizing tank, the pressure stabilizing tank is connected with the cyclic heating mechanism, the cyclic heating mechanism heats gas in the pressure stabilizing tank, a gas outlet end of the pressure stabilizing tank is connected with the fast compressor mechanism, and the air inlet mechanism is connected between the pressure stabilizing tank and the fast compressor mechanism. The device is mainly used for an engine simulation test.
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