Please select the most similar patent number from A, B, C and D. Which number is?
Provided is an oil and gas separation device for an internal combustion engine, comprising a first cavity (10), a second cavity (11) and a third cavity (12), which are arranged in the longitudinal direction. The first cavity (10) communicates with the second cavity (11) via a first gas passage (13). The second cavity (11) communicates with the third cavity (12) via a second gas passage (14). An outlet pipe (6) is communicated to the third cavity (12). A bottom of the first cavity (11) is in communication with an internal combustion engine body (5), and a lower oil baffle plate (4) is arranged between the bottom of the first cavity (10) and the internal combustion engine body (5). The lower oil baffle plate (4) longitudinally covers the first gas passage (13). By using the internal combustion engine oil and gas separation device, the speed and effect of oil and gas separation can be improved.
A: A safe medicinal liquid transfer device, comprising a main body (1) and a connecting member lower cover (2), a needle-shaped body (3) provided on the main body (1), and a gas channel (31) and a liquid channel (32) provided in the needle-shaped body (3), separately; an exhaust cavity (11) communicated with the gas channel (31) is provided in the main body (1), and communicated with the atmosphere by means of a breathable water blocking film body (12); a cavity (4) is provided between the main body (1) and the connecting member lower cover (2), and communicated with the liquid channel (32); the connecting member lower cover (2) is provided with a connection portion (21) connected to a syringe; a sealing structure (5) is provided at the connection portion (21); the sealing structure (5) is deformed as pressure is applied to the syringe, allowing for communication between the syringe and the cavity (4). According to the safe medicinal liquid transfer device, a clinical pharmacist can perform medicine dispensing and dosing operations simply and safely. The exhaust design comprising the exhaust cavity (11) and the breathable water blocking film body (12) allows for efficient balance of the air pressure inside and outside a container. The further inclusion of a sealing structure (5) allows for a closed design, effectively preventing the medicinal liquid from spraying out. The invention thus prevents the waste of medicines, and protects the safety of the pharmacist.
B: An internal combustion engine with a particle charging device, comprising an internal combustion engine body, and an air inlet particle charging device, a fuel particle charging device, a high-voltage power supply and a high-voltage power supply start-stop controller that are provided in the internal combustion engine body. The air inlet particle charging device is provided at the end in the internal combustion engine body close to an engine inlet port and comprises a circular silicone air inlet pipe and a first particle charging device provided in the middle of the interior of the circular silicone air inlet pipe; and the fuel particle charging device is connected between a first oil pipe and a second oil pipe in the internal combustion engine body in series and comprises a metal cavity and a second particle charging device provided in the middle of the metal cavity. According to the internal combustion engine, the problems that the internal combustion engine is high in oil consumption, low in power, prone to engine oil combustion, overproof in tail gas emission and difficult to start and shakes due to carbon deposition can be reduced and eliminated.
C: Disclosed is a filter-plate self-adaptive pressure adjustment oil-gas separation device for an engine. The device comprises a filter-pore separation device and a primary separation device, which are arranged in a mounting slot (101) in a cylinder head cover (100), wherein the mounting slot (101) is provided with a gas inlet hole (102) for receiving an oil-gas mixture in a crankcase; the mounting slot (101) is further provided with an exhaust hole (103) for discharging the separated exhaust gas; and the cylinder head cover (100), the filter-pore separation device and the primary separation device are combined to form a bent oil-gas channel. The filter-plate self-adaptive pressure adjustment oil-gas separation device for an engine can accelerate the oil-gas mixture, and the separated oil droplets flow out through an oil return chamber, thereby having a high separation efficiency and meeting the China VI Engine Emission Standards.
D: A burner (100) and a gas cooker. The burner (100) comprises a bottom tray (10) as well as a flamer (30) and a nozzle holder (20) provided on the bottom tray (10). The bottom tray (10) is provided with a primary air cavity (13). A first primary air opening is provided in the top of the primary air cavity (13), and a cavity through hole (132) is provided in the side wall as a second primary air opening. The flamer (30) comprises an outer annular cavity (31) and an inner annular cavity (32). The bottom tray (10) is provided with a first ejection channel (101). The outer annular cavity (31) is provided with an outer gas mixing cavity (341) to which a mixed gas is supplied by the first ejection channel (101). The inner annular cavity (32) is provided with an inner gas mixing cavity (342) and is connected to a second injection channel (37), and the mixed gas of the inner gas mixing cavity (342) is supplied by the second injection channel (37). A gap (301) communicated with the air inlet of the second ejection channel (37) is formed between the outer annular cavity (31) and the bottom tray (10). A primary air channel (302) communicated with a first primary air inlet is formed between the outer annular cavity (31) and the primary air cavity (13).
Answer: C