Transient characteristic improving device and method for a high-power V-shaped marine diesel engine based on main pipe independent air supply
A technology of marine diesel engines and transient characteristics, which is applied in mechanical equipment, engine components, combustion engines, etc., can solve the problems of uneven distribution of cylinder air supply, poor transient characteristics, and inability to regularly and quantitatively supply air.
Active Publication Date: 2021-05-11
HARBIN ENG UNIV
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[0005] The purpose of the present invention is to solve the problem of poor transient characteristics of the diesel engine due to insufficient intake air in the transient process, and the problem of uneven distribution of gas replenishment in the two rows of cylinders caused by gas replenishment in the connecting pipe, and the inability to replenish gas regularly and quantitatively. A device and method for improving the transient characteristics of a high-power V-type marine diesel engine based on the independent air supply of the main pipe
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[0015]The present invention will be described in more detail below with reference to the accompanying drawings:
[0016]CombineFigure 1-3,figure 1 Summary pattern for high power V-diesel engines with qi devices. Among them, the supercharged diesel engine uses successive pressurization techniques, and its basic components include a column air tube 1 on the side of the diesel A-column cylinder 17 (A1, A2, A3, A4, A5, A6), basic turbocharger 2 , A column exhaust gas tube 3 and a column conventioner 18; on the B-column cylinder 14 (B1, B2, B3, B4, B5, B) side including a B-column air tube 9, controlled turbocharger 7 , The B column exhaust gas tube 6, the exhaust valve 5, the air valve 8, and the B-column velocontrol 13, and the intake communication pipe 4 connecting two columns of intake air profiles and an exhaust communication pipe 15 connecting the two columns of exhaust pipes. The qi-based transient characteristic lifting device is mounted on the diesel engine two-column intake gross ...
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The invention aims to provide a transient characteristic improving device and method for a high-power V-shaped marine diesel engine based on main pipe independent air supply. The transient characteristic improving device for the high-power V-shaped marine diesel engine based on main pipe independent air supply mainly comprises a high-compression air source, an air supply pipe, an air supply injection valve, a high-pressure nozzle, an air inlet pressure sensor, a crankshaft angle sensor, a control unit and the like. According to the transient characteristic improving device and method for the high-power V-shaped marine diesel engine based on main pipe independent air supply provided by the invention, air supply devices are installed on air inlet main pipes on the two sides of the V-shaped diesel engine, sensors for detecting the rotating speed, the pressure of the air inlet main pipes and the like are installed on the diesel engine, the operation working condition of the diesel engine is transmitted to a control system, the operation state of the diesel engine is collected in real time, and operation of the air supply devices is controlled through the control system, so that air is quantitatively supplemented when air intake of the diesel engine is insufficient, the rapid requirement for the air amount under the transient condition is met, the transient characteristic of the diesel engine is improved, and combustion and emission deterioration are avoided.
Description
Technical field[0001]The present invention relates to a diesel engine, specifically a diesel engine into the exhaust gas device and a control method.Background technique[0002]With the continuous development of the ship diesel engine, high-power V-die diesel engine has become more and more widely used, and turbocharged is also one of the indispensable techniques of diesel engine improvement performance. However, a large-scale diesel engine with a single-machine boost will have a problem of insufficient torque under low conditions in actual use, so successive boosting techniques are often used to solve this problem. Silk supercharged technology has also become a trend of future development. The basic principle of successive pressure diesel engine is that the boost diesel engine adopts multiple superchargers. With the growth of the speed and load, the supercharger is operated successively, reaching the best matching of the supercharger and the diesel engine, thereby making the diesel e...
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IPC IPC(8): F02B39/00F02B39/16F02B37/22F02B77/08
CPCF02B39/00F02B39/16F02B37/225F02B77/081Y02T10/12
Inventor 杨立平聂昊鹏王立媛韩冰
Owner HARBIN ENG UNIV