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Engine control system and method matched with double engines and single blade

A control method and a technology of a control system, which are applied in the engine control system and field of matching twin-engine and single-propeller, can solve the problems of small layout space, complex system, and high cost, and achieve small layout space, improved economy, and low cost Effect

Active Publication Date: 2019-12-24
WEICHAI HEAVY MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, due to the mechanical structure of the gearbox, the load cannot be distributed; if only the speed control strategy is used, that is, the input voltage of the governor handle directly corresponds to the speed, regardless of the load, one engine will bear all the load, and the other The phenomenon of one being towed backwards, the fuel is incompletely burned and discharged directly, which affects the service life of the engine and reduces the emission of greenhouse gases; therefore, ships (sea ships) with two engines and one propeller are often equipped with electronic governors and load sharing The device is similar to the generator set in parallel, the engine only needs to control the speed, and the load is distributed and then provided to the engine
However, this technology is usually applied to sea-going ships, and the system is more complicated and the cost is higher; while the tonnage of inland water transport ships is small, the cost is low, and the layout space is small. Transport ships; therefore, in the field of inland rivers, twin engines and double propellers are commonly used, which also limits the application of twin engines and single propellers

Method used

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  • Engine control system and method matched with double engines and single blade
  • Engine control system and method matched with double engines and single blade
  • Engine control system and method matched with double engines and single blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a kind of engine control system that matches twin-engine and single-propeller includes two engines 15 of the same model configuration (engines of the same model configuration work in the same environment, when the speed is consistent and the fuel consumption is close to the same working condition, Its output power is also close to), gear box 12 and propeller 13; Two engines 15 are connected the input end of gear box 12 by clutch 17 respectively, and the output end of gear box 12 is connected screw 13; Engine 15 and corresponding engine electronic control unit 9 electric Connected, the engine 15 is installed with a rotational speed sensor 11 and a fuel feeding unit 14 . The components described above and the connections between the components are all prior art, and will not be described in detail here.

[0036] In addition, the control system of this embodiment also includes a remote control unit 16; the remote control unit 16 is used to outpu...

Embodiment 2

[0041] This embodiment is an engine control method based on the control system of Embodiment 1 matching twin engines and single propellers; the engine in this embodiment is a diesel engine, and the fuel in this embodiment refers to fuel oil. Depend on figure 1 and figure 2 As shown collectively, the control method includes the following steps:

[0042] S0, the engine 15 is started, and the remote control unit 16 is controlled.

[0043] S1, whether the engine electronic control unit 9 receives the parallel signal output by the remote control unit 16, if not, execute step S2; if so, execute step S3;

[0044] S2, the engine 15 (remote control unit 16 outputs the speed regulation voltage signal to one of the motors 15) that receives the speed regulation voltage signal enters the stand-alone speed control mode; find out the target speed from the pre-calibrated voltage-speed MAP according to the speed regulation voltage signal , to adjust the fuel injection amount (by using PID ...

Embodiment 3

[0052] This embodiment is another engine control method based on the control system of Embodiment 1 to match two engines and one propeller; the engine in this embodiment is a gas engine; the fuel in this embodiment refers to gas, which is determined by figure 1 and image 3 As shown collectively, the control method includes the following steps:

[0053] S0, the engine 15 is started, and the remote control unit 16 is controlled.

[0054] S1. Whether the engine electronic control unit 9 receives the parallel signal output by the remote control unit 16, if not, execute step S2; if yes, execute step S3.

[0055] S2, the engine 15 that receives the speed regulation voltage signal now enters the stand-alone speed control mode; the engine electronic control unit 9 finds out the target speed from the pre-calibrated voltage-speed MAP according to the speed regulation voltage signal, and adjusts the gas injection amount (using PID The control is gradually adjusted, and the executive c...

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Abstract

The invention discloses an engine control system and method matched with double engines and a single propeller. The system comprises the two engines configured with the same type, a gearbox, the propeller and a remote control unit. The two engines are connected with the input end of the gearbox through clutches correspondingly, and the output end of the gearbox is connected with the propeller. Theengines are electrically connected with corresponding engine electric control units. The engines are provided with rotating speed sensors and fuel feeding units. The remote control unit is used for outputting speed adjusting voltage signals and parallel operation signals to the engine electric control units. The control method is implemented based on the above control system, when the remote control unit outputs the parallel operation signals to the two engine electric control units at the same time, the two engines enter a double-engine fuel control mode; or otherwise, the engine receiving the speed adjusting voltage signal enters the single-engine rotating speed control mode. By means of the engine control system and method matched with the double engines and the single propeller, automatic distribution of loads can be achieved without additionally increasing a load distributor, the cost is low, and the economical efficiency of a whole ship can be improved.

Description

technical field [0001] The invention belongs to the technical field of engine control in ships, and in particular relates to an engine control system and control method matching twin engines and single propellers. Background technique [0002] Two engines and one propeller means that two engines drive one propeller together. In the prior art, due to the mechanical structure of the gearbox, the load cannot be distributed; if only the speed control strategy is used, that is, the input voltage of the governor handle directly corresponds to the speed, regardless of the load, one engine will bear all the load, and the other The phenomenon of one being towed backwards, the fuel is incompletely burned and discharged directly, which affects the service life of the engine and reduces the emission of greenhouse gases; therefore, ships (sea ships) with two engines and one propeller are often equipped with electronic governors and load sharing The device is similar to the generator set...

Claims

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Application Information

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IPC IPC(8): F02D29/02F02D19/08F02D41/30
CPCF02D29/02F02D19/081F02D41/3011
Inventor 宋杰李杰田书广史艳军张文杰
Owner WEICHAI HEAVY MACHINERY
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