CN219197479U - Control system of auxiliary engine of sanitation truck and sanitation truck - Google Patents

Abstract

The utility model discloses a control system of an auxiliary engine of a sanitation truck and the sanitation truck, wherein the system comprises: the system comprises a sensor assembly, a secondary engine controller, a secondary engine clutch, a special controller, a secondary engine and a loading load, wherein the sensor assembly comprises a water level sensor and a chassis air pressure sensor, the water level sensor is arranged in a clear water tank of the sanitation truck, and the chassis air pressure sensor is arranged in a chassis air tank of the sanitation truck; the special controller is respectively and electrically connected with the water level sensor, the chassis air pressure sensor and the auxiliary engine controller, and the auxiliary engine controller is electrically connected with the auxiliary engine; the first output end of the auxiliary engine is mechanically connected with the loading load through an auxiliary engine clutch, wherein when the auxiliary engine clutch is connected, the auxiliary engine can drive the loading load to carry out loading work. The system can avoid the damage of the load carried by the auxiliary engine on the premise of low cost.

Description

Control system of auxiliary engine of sanitation truck and sanitation truck

Technical Field

The utility model relates to the technical field of vehicles, in particular to a control system of an auxiliary engine of an environmental sanitation vehicle and the environmental sanitation vehicle.

Background

Under the working conditions of cleaning, washing and high-pressure flushing of the sanitation truck, the water pump system is a main water supply component, and the damage of the high-pressure water pump can seriously affect the operation of the vehicle. In the related art, the protection mode of the high-pressure water pump of the sanitation truck is as follows:

1) The clutch is additionally arranged at the high-pressure water pump, when the high-pressure water pump is used, the clutch is connected, if the high-pressure water pump is not used, the clutch is disconnected, so that when the low water level of the clean water tank alarms, the clutch of the high-pressure water pump is disconnected, the auxiliary engine can be started, and the auxiliary engine is used for unloading power of garbage in the garbage bin;

2) The hydraulic power taking system is added on the chassis, the clutch is canceled at the high-pressure water pump, and when the low water level of the clean water tank is alarmed, the auxiliary engine is not moved during loading, and the hydraulic power taking system of the chassis is started for the unloading power of the garbage in the garbage can.

However, the two protection modes for the high-pressure water pump of the sanitation truck have higher cost, complex system and large space occupation.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, a first object of the present utility model is to provide a control system for an auxiliary engine of a sanitation truck, which can solve the problem that the sanitation truck cannot normally discharge due to low clean water tank water level on the premise of saving hardware arrangement space, and avoid damage to rear end equipment of the auxiliary engine.

A second object of the utility model is to propose an sanitation truck.

In order to achieve the above object, a first aspect of the present utility model provides a control system for an auxiliary engine of a sanitation truck, the system comprising: the system comprises a sensor assembly, a secondary engine controller, a secondary engine clutch, a special controller, a secondary engine and a loading load, wherein the sensor assembly comprises a water level sensor and a chassis air pressure sensor, the water level sensor is arranged in a clear water tank of the sanitation truck, and the chassis air pressure sensor is arranged in a chassis air tank of the sanitation truck; the special controller is respectively and electrically connected with the water level sensor, the chassis air pressure sensor and the auxiliary engine controller, and the auxiliary engine controller is electrically connected with the auxiliary engine; the first output end of the auxiliary engine is mechanically connected with the loading load through the auxiliary engine clutch, wherein when the auxiliary engine clutch is connected, the auxiliary engine can drive the loading load to carry out loading work.

The control system of the auxiliary engine of the sanitation vehicle comprises: the system comprises a sensor assembly, a secondary engine controller, a secondary engine clutch, a special controller, a secondary engine and a loading load, wherein the sensor assembly comprises a water level sensor and a chassis air pressure sensor, the water level sensor is arranged in a clear water tank of the sanitation truck, and the chassis air pressure sensor is arranged in a chassis air tank of the sanitation truck; the special controller is respectively and electrically connected with the water level sensor, the chassis air pressure sensor and the auxiliary engine controller, and the auxiliary engine controller is electrically connected with the auxiliary engine; the first output end of the auxiliary engine is mechanically connected with the loading load through an auxiliary engine clutch, wherein when the auxiliary engine clutch is connected, the auxiliary engine can drive the loading load to carry out loading work. Therefore, the clean water tank water level of the sanitation truck can be obtained through the water level sensor, and the clutch of the auxiliary engine is controlled to be disconnected when the clean water tank water level does not meet the conditions, so that the problem that the sanitation truck cannot normally discharge due to low clean water tank water level can be solved on the premise of saving hardware arrangement space, and the damage to rear-end equipment of the auxiliary engine is avoided.

In addition, the control system of the auxiliary engine of the sanitation truck provided by the utility model can also have the following additional technical characteristics:

in some examples, the sensor assembly further includes a water valve open sensor disposed at a total water valve of a high pressure water pump line mechanically connected to the clean water tank; wherein, special controller still with the water valve sensor electricity is connected.

In some examples, the system further comprises a discharge load and a hydraulic drive mechanism, wherein the second output end of the secondary engine is mechanically connected with the discharge load through the hydraulic drive mechanism, and when the secondary engine clutch is disengaged, the secondary engine can drive the discharge load to perform a discharge action through the hydraulic drive mechanism.

In some examples, the water level sensor is provided at the bottom of the clean water tank.

In some examples, the high pressure water pump line is mechanically connected to the bottom of the clean water tank.

In some examples, the upload load comprises: a fan and/or a high pressure water pump.

In some examples, the secondary engine clutch is a pneumatic clutch.

In order to achieve the above object, a second aspect of the present utility model provides an environmental sanitation vehicle, which includes the control system of the auxiliary engine of the environmental sanitation vehicle.

According to the sanitation truck, the control system of the auxiliary engine of the sanitation truck comprises the control system of the auxiliary engine of the sanitation truck, and the control system of the auxiliary engine of the sanitation truck can solve the problem that the sanitation truck cannot normally discharge due to low water level of a clean water tank on the premise of saving hardware arrangement space, so that damage to rear-end equipment of the auxiliary engine is avoided.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic structural view of a control system for a sub-engine of a sanitation truck in accordance with one embodiment of the present utility model;

FIG. 2 is a schematic structural view of a control system for a sub-engine of a sanitation truck according to another embodiment of the present utility model;

FIG. 3 is a layout of a control system for a sub-engine of a sanitation truck in accordance with one embodiment of the present utility model;

FIG. 4 is a control flow diagram of a control system of another example sanitation truck auxiliary engine of the present utility model;

FIG. 5 is a block diagram of the construction of an sanitation truck according to an embodiment of the present utility model;

reference numerals illustrate: 1000. the system comprises an environmental sanitation vehicle 100, a control system of an environmental sanitation vehicle auxiliary engine, 10, a sensor assembly 11, a water level sensor 12, a water valve opening sensor 13, a chassis air pressure sensor 20, an auxiliary engine controller 30, an auxiliary engine clutch 40, a special controller 50, an auxiliary engine 60, an upper load 70, a hydraulic driving mechanism 80 and a discharging load.

Detailed Description

Examples of embodiments of the present utility model are illustrated in the accompanying drawings, in which like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described with reference to the drawings are exemplary and should not be construed as limiting the utility model.

The following describes a control system of an environmental sanitation vehicle and a sub engine thereof according to an embodiment of the present utility model with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a control system of an auxiliary engine of a sanitation truck according to an embodiment of the present utility model.

As shown in fig. 1, a control system 100 of an auxiliary engine of a sanitation vehicle includes: sensor assembly 10, secondary engine controller 20, secondary engine clutch 30, dedicated controller 40, secondary engine 50, and load 60. The sensor assembly 10 includes a water level sensor 11 and a chassis air pressure sensor 13.

Specifically, the water level sensor 11 is arranged in a clean water tank of the sanitation truck, and the chassis air pressure sensor 13 is arranged in a chassis air tank of the sanitation truck; the special controller 40 is electrically connected with the water level sensor 11, the chassis air pressure sensor 13 and the auxiliary engine controller 20 respectively, and the auxiliary engine controller 20 is electrically connected with the auxiliary engine 50; the first output end of the secondary engine 50 is mechanically connected to the loading load 60 via the secondary engine clutch 30, wherein the secondary engine can drive the loading load 60 to perform loading operation when the secondary engine clutch 30 is engaged.

A sensor assembly 10 configured to detect a clean water tank water level and a chassis tank pressure of the sanitation truck; a sub-engine controller 20 connected to the sub-engine 50 of the sanitation truck and configured to control the sub-engine 50; a dedicated controller 40, which is connected to the sensor assembly 10 and the sub-engine controller 20, respectively, and is configured to control the sub-engine clutch 30 and/or control the sub-engine 50 through the sub-engine controller 20 according to the fresh water tank level, the chassis tank pressure, the sub-engine current state, and/or the sub-engine target state. Specifically, the dedicated controller 40 controls the state of the sub-engine clutch 30 of the sanitation truck according to the clean water tank water level and the chassis gas tank pressure, and controls the sub-engine 50 through the sub-engine controller 20 according to the current state of the sub-engine 50 and/or the target state of the sub-engine 50, wherein the sub-engine clutch 30 realizes that the sub-engine 50 drives the loading load 60 of the sanitation truck to perform loading work when in the engaged state.

The water level sensor 11 is used for detecting a water level high-low signal of the clean water tank and sending the water level high-low signal to the special controller 40, so that the special controller 40 judges whether the water level of the clean water tank is abnormal or not according to a detection result of the water level sensor 11; the chassis air pressure sensor 13 is provided by the chassis and is used for detecting the pressure of the chassis air tank and sending the pressure to the special controller 40; the dedicated controller 40 is configured to receive signals from the water level sensor 11 and the chassis air pressure sensor 13, and control whether the sub-engine 50 is started or not and simultaneously control whether the sub-engine clutch 30 is disengaged or not by using the sub-engine controller 20 according to the signals, the current state of the sub-engine 50 and the target state of the sub-engine 50, and the sub-engine clutch 30 receives a control instruction from the dedicated controller 40 and controls whether the load carried by the sub-engine 50 is running or not, thereby protecting the load carried by the sub-engine from being damaged.

In some embodiments of the present utility model, referring to FIG. 2, the sensor assembly 10 further includes a water valve opening sensor 12, the water valve opening sensor 12 being provided at the total water valve of the high pressure water pump line, the high pressure water pump line being mechanically connected to the clean water tank; wherein the dedicated controller 40 is also electrically connected to the water valve opening sensor 12. When abnormality is detected by the water level sensor 11 or the water valve opening sensor 12, it is determined that abnormality occurs in the fresh water tank water level.

In some embodiments of the present utility model, referring to fig. 3, the control system 100 of the auxiliary engine of the sanitation truck further includes a discharging load 80 and a hydraulic driving mechanism 70, wherein the second output end of the auxiliary engine 50 is mechanically connected with the discharging load 80 through the hydraulic driving mechanism 70, and when the auxiliary engine clutch 30 is disengaged, the auxiliary engine 50 can drive the discharging load 80 to perform a discharging action through the hydraulic driving mechanism 70. The dedicated controller 40 is further configured to control the sub-engine clutch 30 to be disengaged when the chassis tank pressure falls within the safe range, and to control the sub-engine 50 to be in a start state by the sub-engine controller 20 when the target state of the sub-engine 50 is in a start state, so as to enable the sub-engine to drive the unloading load 80 to perform the unloading operation, wherein the unloading load 80 comprises a dustbin.

The hydraulic driving mechanism 70 comprises a direct-connection oil pump, a hydraulic driving oil tank and a hydraulic control valve, wherein the direct-connection oil pump is connected with the auxiliary engine 50, the hydraulic driving oil tank is communicated with an oil inlet of the direct-connection oil pump through a hydraulic oil inlet pipeline, an oil outlet of the direct-connection oil pump is communicated with the hydraulic control valve through a hydraulic oil outlet pipeline, the hydraulic control valve is connected with a hydraulic execution element through a hydraulic oil branch pipeline, and the unloading load is controlled through the hydraulic execution element.

In some embodiments of the present utility model, the dedicated controller 40 is further configured to control the secondary engine 50 to stop if the current state of the secondary engine 50 is a start-up state when the chassis tank pressure is not within the safe range.

In some embodiments of the present utility model, the water level sensor 11 is provided at the bottom of the fresh water tank.

In some embodiments of the utility model, the high pressure water pump line is mechanically connected to the bottom of the clean water tank.

In some embodiments of the utility model, the upper load 60 includes a fan and a high pressure water pump.

In some embodiments of the utility model, the secondary engine clutch 30 is a pneumatic clutch.

Specifically, as shown in fig. 4, a control flow chart of a control system of an auxiliary engine of an sanitation truck according to an example of the present utility model includes the following steps:

s101, acquiring the clean water tank water level of the sanitation truck and the total water valve state on the water path of the high-pressure water pump.

Specifically, the water level sensor 11 detects the clean water tank water level of the sanitation truck, and the water valve opening sensor 12 detects the total water valve state on the high-pressure water pump water path.

S102, when the clean water tank water level is smaller than or equal to a low water level threshold value, or the total water valve state is in a closed state, acquiring the chassis gas tank pressure, the current state of the auxiliary engine and the target state of the auxiliary engine of the sanitation truck.

Specifically, when the water level of the clean water tank is detected to be smaller than or equal to a low water level threshold value, or the total water valve state is in a closed state, the current state and the target state of the auxiliary engine of the sanitation truck are detected, and the pressure of the chassis air tank is detected by a chassis air pressure sensor of the chassis of the sanitation truck. As one example, the target state of the sub-engine 50 may be determined by whether or not a discharge instruction is received, for example, when a discharge instruction is received, the target state of the sub-engine 50 is determined to be a start state.

S103, controlling the auxiliary engine according to the chassis gas tank pressure, the current state of the auxiliary engine and the target state of the auxiliary engine.

In some embodiments of the present utility model, the control of the secondary engine based on chassis tank pressure, secondary engine current state, and secondary engine target state may include the following six scenarios:

in the first scenario, when the chassis gas tank pressure falls within the preset safety range, the sub-engine 50 is in a stopped state, and the sub-engine 50 target state is a started state, the sub-engine 50 is controlled to be started by the sub-engine controller 20 of the sub-engine 50.

Wherein, control the start of the sub engine 50 by the sub engine controller 20 of the sub engine 50 includes: the idle speed value is sent to the sub-engine controller 20 to cause the sub-engine controller 20 to control the sub-engine 50 to start according to the idle speed value.

Specifically, if the chassis gas tank pressure is detected to fall within the preset safety range, the sub-engine clutch 30 is first controlled to be disengaged, and the state of the sub-engine 50 is determined. If the secondary engine 50 is in the stop state, when the special controller receives the unloading command, the target state of the secondary engine 50 is indicated to be a starting state, the special controller sends an idle speed value to the secondary engine controller 20 of the secondary engine 50, the secondary engine controller 20 controls the secondary engine 50 to start according to the idle speed value, and the secondary engine clutch 30 is kept in the release state, so that the load carried by the secondary engine 50 is ensured not to work. Therefore, under the condition that the clean water tank alarms at a low water level, the sanitation truck can normally perform unloading work, and meanwhile, the load carried by the auxiliary engine 50 can not be damaged because the load carried by the auxiliary engine 50 is not operated, and the load can comprise a high-pressure water pump and a fan.

In the second scenario, when the chassis gas tank pressure falls within the preset safety range, the sub-engine 50 is in a started state, and the sub-engine 50 target state is a started state, and the sub-engine 50 is controlled by the sub-engine controller 20 of the sub-engine 50 to maintain the current started state.

Specifically, if the chassis tank pressure is detected to fall within the preset safety range, the sub-engine clutch 30 is first controlled to be disengaged. If the sanitation truck is executing the loading action, the loading action is stopped, the auxiliary engine 50 is in a starting state, when the special controller receives the unloading command, the target state of the auxiliary engine 50 is indicated to be the starting state, the special controller sends an idle speed value to the auxiliary engine controller 20 of the auxiliary engine 50, the auxiliary engine controller 20 controls the auxiliary engine 50 to maintain the current starting state according to the idle speed value, the auxiliary engine clutch 30 is kept in a disengaging state, and the load carried by the auxiliary engine 50 is ensured not to work.

In the third scenario, when the chassis gas tank pressure falls within the preset safety range, the sub-engine 50 is in a stopped state, and the target state of the sub-engine 50 is the stopped state, the sub-engine 50 is controlled to maintain the current stopped state.

In the fourth scenario, when the chassis gas tank pressure falls within the preset safety range, the secondary engine 50 is in a started state, and the target state of the secondary engine 50 is a stop state, the dedicated controller sends a zero rotation speed signal to the secondary engine controller 20 of the secondary engine 50, so as to control the secondary engine 50 to stop.

Scenario five, when chassis tank pressure does not fall within the safe range and the current state of the sub-engine 50 is a stopped state, the sub-engine 50 is controlled to maintain the stopped state.

In the sixth scenario, when the chassis gas tank pressure does not fall within the safe range and the current state of the sub-engine 50 is the start-up state, the sub-engine 50 is controlled to stop by the sub-engine controller 20 of the sub-engine 50.

Specifically, when the chassis gas tank pressure is detected to be out of the safety range and the current state of the sub-engine 50 is the start state, the dedicated controller sends a zero rotation speed signal to the sub-engine controller 20 of the sub-engine 50 to control the sub-engine 50 to stop working until the chassis gas tank pressure falls into the safety range, and the sub-engine 50 is started again.

In some embodiments of the present utility model, the idle speed value may be determined according to a control manner of the secondary engine 50, where the control manner includes controlling the secondary engine 50 to start or controlling the secondary engine 50 to maintain a current start state; the idle speed value is sent to the sub-engine controller 20 so that the sub-engine controller 20 controls the sub-engine 50 according to the idle speed value.

Specifically, the idle speed value refers to a rotational speed value after the sub-engine 50 is stably operated, which is determined according to a control manner of the sub-engine 50, for example, when the current state of the sub-engine 50 is controlled to be in a stopped state and the sub-engine 50 needs to be started, the idle speed value for the stable operation after the start of one sub-engine 50 is corresponding to the idle speed value, the dedicated controller sends the idle speed value to the sub-engine controller 20 of the sub-engine 50, and the sub-engine controller 20 controls the start of the sub-engine 50 according to the determined idle speed value.

Based on this, in the embodiment of the utility model, a high-pressure water pump clutch and a chassis power takeoff system are not required to be additionally added, so that when the low water level of the clean water tank is alarmed or the total water valve is closed, the pressure value of the chassis gas tank, the current state of the auxiliary engine 50 and the target state of the auxiliary engine 50 are combined, and the auxiliary engine clutch 30 is controlled to be disengaged, so that the load carried by the auxiliary engine 50 is ensured not to be operated so as not to be damaged on the premise of low cost; in addition, in the whole control process, the start-stop protection function of the auxiliary engine 50 is added, so that the auxiliary engine 50 can be normally started when the auxiliary engine clutch 30 is disengaged, and the normal unloading of the sanitation truck is ensured.

In summary, the control system of the auxiliary engine of the sanitation truck in the embodiment of the utility model comprises: a sensor assembly configured to detect a clean water tank water level, a total water valve condition on a high pressure water pump water line, and chassis tank pressure of the sanitation truck; a sub-engine controller connected with a sub-engine of the sanitation truck and configured to control the sub-engine; and the special controller is respectively connected with the sensor assembly and the auxiliary engine controller and is configured to control the state of the auxiliary engine clutch according to the clean water tank water level, the total water valve state and the chassis air tank pressure and control the auxiliary engine through the auxiliary engine controller according to the current state of the auxiliary engine and/or the target state of the auxiliary engine. Therefore, the control system of the auxiliary engine of the sanitation truck can solve the problem that the sanitation truck cannot normally discharge due to low water level of the clean water tank on the premise of saving hardware arrangement space, and avoid damage of rear-end equipment of the auxiliary engine.

Further, the utility model provides an environmental sanitation vehicle.

Fig. 4 is a block diagram of the construction of an sanitation truck according to an embodiment of the present utility model.

As shown in fig. 4, the sanitation vehicle 1000 includes a control system 100 of the sanitation vehicle sub engine.

According to the sanitation truck, the control system of the auxiliary engine of the sanitation truck can solve the problem that the sanitation truck cannot normally discharge due to low water level of the clean water tank on the premise of low cost, and damage to rear-end equipment of the auxiliary engine is avoided.

It should be noted that the logic and/or steps represented in the flow diagrams or otherwise described herein may be considered a ordered listing of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

It is to be understood that portions of the present utility model may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present specification, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. refer to an orientation or positional relationship based on that shown in the drawings, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the description of the present specification, unless otherwise indicated, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (8)

1. A control system for an auxiliary engine of a sanitation truck, the system comprising: the system comprises a sensor assembly, a secondary engine controller, a secondary engine clutch, a special controller, a secondary engine and a loading load, wherein the sensor assembly comprises a water level sensor and a chassis air pressure sensor, the water level sensor is arranged in a clean water tank of the sanitation truck, and the chassis air pressure sensor is arranged in a chassis air tank of the sanitation truck;

the special controller is respectively and electrically connected with the water level sensor, the chassis air pressure sensor and the auxiliary engine controller, and the auxiliary engine controller is electrically connected with the auxiliary engine; the first output end of the auxiliary engine is mechanically connected with the loading load through the auxiliary engine clutch, wherein when the auxiliary engine clutch is connected, the auxiliary engine can drive the loading load to carry out loading work.

2. The control system of an auxiliary engine for a sanitation truck according to claim 1, wherein the sensor assembly further comprises a water valve opening sensor, the water valve opening sensor is arranged at a total water valve of a high-pressure water pump pipeline, and the high-pressure water pump pipeline is mechanically connected with the clean water tank; wherein, special controller still with the water valve sensor electricity is connected.

3. The control system of an auxiliary engine of a sanitation truck according to claim 1, further comprising a discharging load and a hydraulic driving mechanism, wherein the second output end of the auxiliary engine is mechanically connected with the discharging load through the hydraulic driving mechanism, and when the auxiliary engine clutch is disengaged, the auxiliary engine can drive the discharging load to perform discharging action through the hydraulic driving mechanism.

4. The control system of an auxiliary engine for a sanitation truck according to claim 1, wherein the water level sensor is provided at a bottom of the clean water tank.

5. The control system of an auxiliary engine for a sanitation truck according to claim 2, wherein the high pressure water pump line is mechanically connected to the bottom of the clean water tank.

6. The control system of a sub-engine of a sanitation truck of claim 1, wherein the load on the loader comprises: a fan and/or a high pressure water pump.

7. The control system of a sub-engine of a sanitation truck as claimed in any one of claims 1 to 6, wherein the sub-engine clutch is a pneumatic clutch.

8. An environmental sanitation vehicle comprising an environmental sanitation vehicle accessory engine control system as claimed in any one of claims 1 to 7.

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