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公开(公告)号：US20240352901A1
公开(公告)日：2024-10-24
申请号：US18748392
申请日：2024-06-20
发明人： Haifeng REN , Fei WANG , Bin PANG , Qingzhen MA , Huihui WANG , Lin CHEN , Wenchao MO , Xianfa XU
IPC分类号： F02D41/00
CPC分类号： F02D41/0087 , F02D41/009 , F02D2200/0614 , F02D2200/101
摘要： In a cylinder deactivation control method of an engine, a cylinder deactivation trigger moment of a to-be-controlled engine is determined; a second cycle and a cylinder deactivation mode corresponding to the next first cycle are determined according to the crankshaft rotation speed at the cylinder deactivation trigger moment, the target torque at the cylinder deactivation trigger moment, and a second cycle and a cylinder deactivation mode corresponding to the previous first cycle at the cylinder deactivation trigger moment; the fuel injection quantity of the ignition cylinder in the next first cycle is determined.
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公开(公告)号：US12109533B2
公开(公告)日：2024-10-08
申请号：US17278623
申请日：2018-09-29
CPC分类号： B01D53/9431 , B01D53/9418 , B60K15/03 , B60K15/04 , F01N3/2066 , F01N2610/1406 , F01N2610/1466
摘要： A tank cover of a urea tank for an SCR aftertreatment system is provided with an air hole, a gas inlet hole, a gas discharge hole, a first constant pressure check valve and a second constant pressure check valve. The tank cover is mounted at a liquid injection port of a tank body of the urea tank. The air hole is provided in a portion of the tank cover corresponding to the liquid injection port. The gas inlet hole and the gas discharge hole are provided in the portion of the tank cover corresponding to the liquid injection port. An inlet of the first constant pressure check valve is butted with the air outlet hole. An inlet of the second constant pressure check valve is butted with the air inlet hole.
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公开(公告)号：US20240254939A1
公开(公告)日：2024-08-01
申请号：US18560688
申请日：2022-01-21
发明人： Xuguang TAN , Bin PANG , Dehui TONG , Peng ZHOU , Xiaoxin LIU , Yuncheng GU , Xu CHENG
CPC分类号： F02D41/402 , F02D2041/389
摘要： A control method for the combustion system comprises: a fuel injector conducts first primary spray and second primary spray at intervals, and the fuel injector injects fuel to a first arc ridge during the first primary spray; and the fuel injector sprays fuel to a second arc ridge during the second primary spray. By adopting a combustion chamber having two arc ridges and respectively injecting fuel to the two arc ridges by means of the fuel injector, it can be ensured that the amount of fuel shared by each arc ridge is reduced, gathering the fuel at a single arc ridge can be avoided, and it is beneficial to exert the improvement effect of the arc ridge on a wall impact jet flow velocity field at the tail end of a fuel beam, such that the fuel and gas distribution in a cylinder is facilitated.
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4.发明公开公开(公告)号：US20240117780A1
公开(公告)日：2024-04-11
申请号：US18276926
申请日：2021-12-13
发明人： Xuguang TAN , Dehui TONG , Peng ZHOU , Xiaoxin LIU , Bin PANG
CPC分类号： F02D41/402 , F02D41/2432 , F02D41/2467 , F02D41/3836 , F02D2041/389 , F02D2200/024
摘要： A combustion system may include a piston, a fuel injector, and a cylinder. At a main fuel injection stage, the fuel injector injects a main fuel into the cylinder in sequence to drive the piston to work. A method for controlling the combustion system includes controlling the fuel injector to execute a first-stage main fuel injection in a compression stroke, the first-stage main fuel injection includes at least one injection, and continues till a power stroke such that the cylinder pressure in the cylinder reaches a target pressure peak value; and before the cylinder pressure in the cylinder reaches a descending critical point, executing a second-stage main fuel injection, the second-stage main fuel injection includes at least one injection, and the fuel injected in the second-stage main fuel injection and the fuel injected in the first-stage main fuel injection are superimposed.
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公开(公告)号：US20230392539A1
公开(公告)日：2023-12-07
申请号：US18028377
申请日：2020-11-24
发明人： Xiaolei FU , Chao RONG , Xia WANG , Jianqiang WEI
CPC分类号： F01P7/165 , F01P3/02 , F01P2003/027
摘要： The present invention belongs to the technical field of diesel engines, and particularly relates to an engine cooling system and a cooling method therefor. In the engine cooling system of the present invention, when an engine needs to be warmed up, a first valve is opened, a lower engine body water storage chamber is in communication with an upper engine body water storage chamber, and some of the cooling water directly flows into the lower engine body water storage chamber from the upper engine body water storage chamber. The flow of the cooling water entering an engine body is reduced, and under the condition that heat dissipated by the engine is unchanged, the temperature rise of the cooling water flowing through the engine body such as a cylinder sleeve upper cooling water chamber and a cylinder sleeve lower water jacket is faster, such that an engine warming effect is improved.
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公开(公告)号：US11761853B2
公开(公告)日：2023-09-19
申请号：US17858816
申请日：2022-07-06
发明人： Haijun Liu , Ninglu Wang , Fei Ma , Baoyu Liu , Lei Li
摘要： An engine piston is provided. A first sealing structure, including a first sealing rubber ring and a first annular groove, is provided at a head of the engine piston. The first sealing rubber ring has a U-shaped section with a reserved space at the top of the first sealing rubber ring, and a gap for circulating hydraulic oil is provided between a ring bank, above the first sealing rubber ring, of the engine piston and a simulated cylinder liner of a fatigue testing apparatus for an engine piston. In a case that the hydraulic oil is introduced into the fatigue testing apparatus for the engine piston to simulate pressure loading under a high-explosion pressure, when the hydraulic oil enters into the reserved space from the gap for circulating the hydraulic oil, an inner wall of the reserved space is squeezed and the first sealing rubber ring is deformed.
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公开(公告)号：US11530660B2
公开(公告)日：2022-12-20
申请号：US17256595
申请日：2018-11-15
发明人： Dawei Song , Xuebin Wang , Peng Huang
摘要： A phase diagnosis method and apparatus. When it is verified that the location of an engine is valid, an oil injector performs spraying at a top center compression position; if no acceleration is detected after spraying, it indicates that a fault occurs; in order to detect whether it is a fault of phase deviation of the camshaft by 180 degrees, the oil sprayer performs spraying at the top center exhaust position and detects whether there is an acceleration; if an acceleration is detected, it indicates that the situation of the phase deviation of the camshaft by 180 degrees exists. In this way, the problem in the prior art of being unable to detect phase deviation when the phase of a camshaft is deviated by 180 degrees is solved.
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公开(公告)号：US11486273B2
公开(公告)日：2022-11-01
申请号：US17419258
申请日：2018-12-29
发明人： Fei Wang , Cheng Xu , Zhongsheng Ren , Baojun Wang , Deshi Xu , Gang Wang
摘要： A variable valve driving mechanism of an engine includes a rocker arm configured to control open and close of a valve and a servo rocker arm arranged in parallel to the rocker arm. A swing end of the servo rocker arm extends to the top of the swing end of the rocker arm. A valve adjustment gap provided in the swing direction of the servo rocker arm and the rocker arm is formed between the servo rocker arm and the rocker arm. A gap compensating device telescopically filling the valve adjustment gap and configured to adjust the valve to be delayed to close or open in advance when extending to the valve adjustment gap is provided between the servo rocker arm and the rocker arm.
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公开(公告)号：US11203991B2
公开(公告)日：2021-12-21
申请号：US16765576
申请日：2018-06-29
发明人： Shuaiqing Xu , Xuebin Wang , Feng Xie , Wang Li
摘要： A gas control system of a non-road gas engine and a gas control method thereof are disclosed by the present disclosure. The gas control system includes a mixer, the mixer is provided with an air inlet, a gas inlet and a mixed gas outlet respectively, the air inlet is provided with a first pressure sensor, the gas inlet is provided with a second pressure sensor and a pressure regulating valve that are spaced apart, and the mixed gas outlet is provided with a third pressure sensor; the first pressure sensor, the second pressure sensor, the pressure regulating valve and the third pressure sensor are respectively electrically connected to a controller, and the controller controls an opening degree of the pressure regulating valve according to pressure information fed back by the first pressure sensor, the second pressure sensor and the third pressure sensor so as to adjust an air-gas ratio of the mixed gas. The system has a simple structure. By disposing a pressure regulating valve at the gas inlet, the pressure of the gas entering the mixer is controlled, and the air-gas ratios required under various working conditions are controlled, which realizes a closed-loop control so that a control range of the air-gas ratio is smaller, the accuracy is higher, and a transient response speed of the engine is improved.
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公开(公告)号：US11149621B2
公开(公告)日：2021-10-19
申请号：US16765140
申请日：2017-12-28
发明人： Yangyang Zhang , Hongshuang He , Qingqing Zhang , Bin Hou , Feng Yun , Chao Rong
摘要： An exhaust pipe assembly includes: an exhaust cavity; an exhaust port (234) and at least two air inlets (115) communicating with the exhaust cavity, the exhaust port (234) being disposed at an end of the exhaust pipe assembly; and a water inlet (114), a first part of a water inlet cavity (111), a second part of a water inlet cavity, a water counterflow cavity, and a water outlet (311) that are provided in the exhaust pipe assembly. The water inlets (114) are provided in the same number as the air inlets (115). The first part of the water inlet cavity (111) communicates with the first water inlet portion (114). The second part of the water inlet cavity communicates with the second water inlet portion (114). The water counterflow cavity communicates with the end of the second part of the water inlet cavity located at the exhaust port (234) of the exhaust pipe assembly. The water outlet (311) is disposed at a second end of the exhaust pipe assembly. The first part of the water inlet cavity (111) and the water counterflow cavity each communicate with the water outlet (311).
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