High-temperature oil-water mixed injection gasoline engine structure capable of recycling waste heat
A technology of oil-water mixing and waste heat recovery, which is applied in the direction of mechanical equipment, engine components, combustion engines, etc., to achieve the effects of avoiding nozzle sticking, reducing heat loss, and optimizing combustion phase
Inactive Publication Date: 2018-05-18
TONGJI UNIV
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Problems solved by technology
However, the thermal efficiency of small-displacement supercharged internal combustion engines is limited by knocking and pre-ignition phenomena.
Method used
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Embodiment 1
[0019] Such as figure 1 As shown, a gasoline engine structure with waste heat recovery and high-temperature oil-water mixed injection includes a throttle valve 1, a spark plug 2, an oil-water mixing nozzle 3, a high-pressure common rail 4, a three-way valve 5, a thermocouple 17, a rail pressure sensor 18, and a heat exchanger 6. Condenser 7, water tank 8, water pump 9, oil-water mixing device 10, high-pressure pump 11, fuel tank 12, low-pressure oil pump 13, flow meter a14, flow meter b15, pressure limiting valve 16, electronic control unit 19, internal combustion engine cylinder, The condenser 7 is connected to the exhaust output end of the internal combustion engine block, and the condenser 7 is connected to the exhaust output end of the internal combustion engine block. The condenser 7 condenses the water vapor in the exhaust gas into liquid water for recovery. The condenser 7 The output end is connected to the water tank 8, and the water in the water tank 8 is pressurized ...
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The invention relates to a high-temperature oil-water mixed injection gasoline engine structure capable of recycling waste heat. The structure comprises a heat exchanger (6) and a condenser (7), an exhaust output end of an internal combustion engine cylinder body is sequentially connected with the heat exchanger (6), the condenser (7) and a water tank (8), after a high-temperature tail gas discharged by the exhaust output end of the internal combustion engine cylinder body is subjected to heat exchange with the heat exchanger (6) and condensation through the condenser (7), the water vapor in the tail gas is condensed into liquid water to be recycled to the water tank (8) for cyclic utilization, meanwhile, an oil-water mixture discharged by an oil-water mixing device (10) passes through theheat exchanger (6) to exchange heat with the high-temperature tail gas, and then is sprayed into the internal combustion engine cylinder body after the waste heat is recycled, so that the waste heatand the water are recycled. Compared with the prior art, the structure has the advantages that the problems of the blockage and failure of a nozzle and unstable injection and the like caused by poor lubricity in the high-temperature water injection process can be effectively solved, the requirement on the nozzle is lower, the modification is less, and the structure is more suitable for industrialization requirements.
Description
technical field [0001] The invention belongs to the technical field of internal combustion engines, and in particular relates to a gasoline engine structure for waste heat recovery and high-temperature oil-water mixed injection. Background technique [0002] Fuel consumption regulations and emission regulations are becoming more and more stringent, posing challenges to vehicle engine energy-saving and emission-reduction technologies. At present, most passenger car engines in my country are gasoline engines, so the development of gasoline engine energy-saving and emission reduction technologies is of great significance to my country's environment and energy. At present, the mainstream technology route is miniaturization of gasoline engine, high boost pressure, high compression ratio to achieve high-efficiency combustion and reduce fuel consumption. However, the thermal efficiency of small-displacement supercharged internal combustion engines is limited by knocking and pre-ig...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F02M25/025F01N5/02F01N3/00F02M31/16
CPCF01N3/005F01N5/02F02M25/0222F02M25/025F02M31/16Y02T10/12
Inventor 吴志军张哲豪康哲邓俊胡宗杰李理光
Owner TONGJI UNIV