Nhờ các cụ phụ giúp dịch tiếng anh chuyên ngành
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great_noble2251
Thành viên O-H
bác cho em hỏi cụm outwardly opening poppet dịch là gì bác nhỉ?
The injection characteristics obtained using both pressure atomization and air – assisted atomization were compared by Hoffman et at. by means of mass flux measurements using a spray patternator. The air – assisted atomizer utilized an outwardly opening poppet, with the injection cycle starting with the opening of a fuel solenoid and charging the mixing cavity with fuel. pressure air then further charges the cavity and elevates the chamber pressure until the poppet is forced to open at a pre – set cracking pressure. Due to the counteracting forces of spring tension and pressure, the poppet was observed to oscillate during the entire fuel injection process. Fig. 32 shows the poppet lift and injection volume of .this air – assisted system operating with a quantity of 69 mm3 was found to deliver 83% of the fuel within a 2.5 ms period even though the poppet was observed to oscillate for a total of 7.25 ms. This suggests that fuel delivery occurs during the first three poppet cycles, with the first poppet bounce delivering the highest fuel volume flux. This particular air – assisted system also exhibits a wide hollow cone spray structure. A comparison of the injection rates between the pressure atomizer and the air – assisted injector is illustrated in Fig.33. The high – pressure atomizer generates a solid – cone spray at the beginning of injection, which then develops into a hollow – cone structure that eventually contracts or collapses to a smaller spray cone. The mass flux measurement results suggest that the interaction of the spray with the entrainment vortex contribute to the spray sheet dispersion and the final cone angle after collapse. the pressure atomizer was found to provide a constant fuel delivery rate over the main portion of the injection pulse, with the flow rate decaying only during the very last portion of the pulse due to the pintle closing
The injection characteristics obtained using both pressure atomization and air – assisted atomization were compared by Hoffman et at. by means of mass flux measurements using a spray patternator. The air – assisted atomizer utilized an outwardly opening poppet, with the injection cycle starting with the opening of a fuel solenoid and charging the mixing cavity with fuel. pressure air then further charges the cavity and elevates the chamber pressure until the poppet is forced to open at a pre – set cracking pressure. Due to the counteracting forces of spring tension and pressure, the poppet was observed to oscillate during the entire fuel injection process. Fig. 32 shows the poppet lift and injection volume of .this air – assisted system operating with a quantity of 69 mm3 was found to deliver 83% of the fuel within a 2.5 ms period even though the poppet was observed to oscillate for a total of 7.25 ms. This suggests that fuel delivery occurs during the first three poppet cycles, with the first poppet bounce delivering the highest fuel volume flux. This particular air – assisted system also exhibits a wide hollow cone spray structure. A comparison of the injection rates between the pressure atomizer and the air – assisted injector is illustrated in Fig.33. The high – pressure atomizer generates a solid – cone spray at the beginning of injection, which then develops into a hollow – cone structure that eventually contracts or collapses to a smaller spray cone. The mass flux measurement results suggest that the interaction of the spray with the entrainment vortex contribute to the spray sheet dispersion and the final cone angle after collapse. the pressure atomizer was found to provide a constant fuel delivery rate over the main portion of the injection pulse, with the flow rate decaying only during the very last portion of the pulse due to the pintle closing
great_noble2251
Thành viên O-H
bác cho em hỏi cụm outwardly opening poppet dịch là gì bác nhỉ?
The injection characteristics obtained using both pressure atomization and air – assisted atomization were compared by Hoffman et at. by means of mass flux measurements using a spray patternator. The air – assisted atomizer utilized an outwardly opening poppet, with the injection cycle starting with the opening of a fuel solenoid and charging the mixing cavity with fuel. pressure air then further charges the cavity and elevates the chamber pressure until the poppet is forced to open at a pre – set cracking pressure. Due to the counteracting forces of spring tension and pressure, the poppet was observed to oscillate during the entire fuel injection process. Fig. 32 shows the poppet lift and injection volume of .this air – assisted system operating with a quantity of 69 mm3 was found to deliver 83% of the fuel within a 2.5 ms period even though the poppet was observed to oscillate for a total of 7.25 ms. This suggests that fuel delivery occurs during the first three poppet cycles, with the first poppet bounce delivering the highest fuel volume flux. This particular air – assisted system also exhibits a wide hollow cone spray structure. A comparison of the injection rates between the pressure atomizer and the air – assisted injector is illustrated in Fig.33. The high – pressure atomizer generates a solid – cone spray at the beginning of injection, which then develops into a hollow – cone structure that eventually contracts or collapses to a smaller spray cone. The mass flux measurement results suggest that the interaction of the spray with the entrainment vortex contribute to the spray sheet dispersion and the final cone angle after collapse. the pressure atomizer was found to provide a constant fuel delivery rate over the main portion of the injection pulse, with the flow rate decaying only during the very last portion of the pulse due to the pintle closing
The injection characteristics obtained using both pressure atomization and air – assisted atomization were compared by Hoffman et at. by means of mass flux measurements using a spray patternator. The air – assisted atomizer utilized an outwardly opening poppet, with the injection cycle starting with the opening of a fuel solenoid and charging the mixing cavity with fuel. pressure air then further charges the cavity and elevates the chamber pressure until the poppet is forced to open at a pre – set cracking pressure. Due to the counteracting forces of spring tension and pressure, the poppet was observed to oscillate during the entire fuel injection process. Fig. 32 shows the poppet lift and injection volume of .this air – assisted system operating with a quantity of 69 mm3 was found to deliver 83% of the fuel within a 2.5 ms period even though the poppet was observed to oscillate for a total of 7.25 ms. This suggests that fuel delivery occurs during the first three poppet cycles, with the first poppet bounce delivering the highest fuel volume flux. This particular air – assisted system also exhibits a wide hollow cone spray structure. A comparison of the injection rates between the pressure atomizer and the air – assisted injector is illustrated in Fig.33. The high – pressure atomizer generates a solid – cone spray at the beginning of injection, which then develops into a hollow – cone structure that eventually contracts or collapses to a smaller spray cone. The mass flux measurement results suggest that the interaction of the spray with the entrainment vortex contribute to the spray sheet dispersion and the final cone angle after collapse. the pressure atomizer was found to provide a constant fuel delivery rate over the main portion of the injection pulse, with the flow rate decaying only during the very last portion of the pulse due to the pintle closing
thehienoto
Thành viên O-H
EM nghĩ là: Van mở ngoài(Hoặc van mở phía ngoài). Thông cảm dạo này em nhiều bài dịch quá không có thời gian online.
great_noble2251
Thành viên O-H
bác xem dùm em cụm nạy dịch ntn được không bác: The ignition point lies within a narrow crankshaft window because of the retarded injection end point and the time available for mixture formation at the end of the compression stroke
great_noble2251
Thành viên O-H
bác cho em hỏi là cụm solid jet nên dịch là gì thì hợp lý nhất?
The central solid jet which was due to the sac volume inside the injector, which was inwardly opening type, was detected in the middle and lower bound in every picture. The solid jet would induce the wetting to the cylinder and piston bowl, affecting UHC(Unburned Hydrocarbon) emission. As the injector pressure increased, the intensity of Mie scattering image was increased. Spray penetration depth and width were measured from the Mie scattering image.
The central solid jet which was due to the sac volume inside the injector, which was inwardly opening type, was detected in the middle and lower bound in every picture. The solid jet would induce the wetting to the cylinder and piston bowl, affecting UHC(Unburned Hydrocarbon) emission. As the injector pressure increased, the intensity of Mie scattering image was increased. Spray penetration depth and width were measured from the Mie scattering image.
great_noble2251
Thành viên O-H
thehienoto
Thành viên O-H
Thông cảm em chút. Cuối năm bận lắm có được tý thời gian ranh nào đâu.
great_noble2251
Thành viên O-H
quangdaihd
Thành viên O-H
Tin06041995
Thành viên O-H
quangdaihd
Thành viên O-H
Tin06041995
Thành viên O-H
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