DESC:FIELD
The present disclosure relates to the field of battery-operated electric vehicles. More particularly, the present disclosure relates to a battery-operated system for a sewage cleaning and suction excavation electric vehicle.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
Traditionally, sewage vehicles used for suction, jetting, and excavation operations have been powered by internal combustion engines (ICEs). These vehicles rely on diesel or petrol engines to generate mechanical power, which is then used to drive the vehicle itself and operate auxiliary systems such as vacuum pumps, jetting pumps, and hydraulic systems. In conventional setups, the engine’s power output is split using mechanical arrangements like gearboxes and PTO (Power Take-Off) units to perform critical tasks such as suction of sludge, jetting of high-pressure water for pipeline cleaning, tipping of tanks, door operations, and hose reel actuation. While internal combustion engine-powered sewage vehicles have been effective in fulfilling municipal and industrial sewage handling needs, they come with several inherent limitations. High fuel consumption, increased operational and maintenance costs, noise pollution, and significant carbon emissions are persistent issues with ICE vehicles. Moreover, frequent idling during suction or jetting operations leads to additional fuel wastage and higher emission levels, making them environmentally unsustainable in the long term.
There is therefore a need for a battery-operated system for a sewage cleaning and suction excavation electric vehicle.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
An object of the present disclosure is to provide a system that enhances operational efficiency.
Another object of the present disclosure is to provide a cost-efficient system.
Still another object of the present disclosure is to provide a system that improves environmental conditions and operational productivity.
Yet another object of the present disclosure is to provide a system that decreases maintenance requirements associated with the mechanical wear and tear of the engines and gearboxes.
Still another object of the present disclosure is to provide a system that operates with zero carbon emissions.
Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure is a battery-operated system for a sewage cleaning and suction excavation electric vehicle. The system comprises a battery pack, an ignition switch, an electric motor, a propeller shaft, a power take-off (PTO) unit, a belt pulley unit, a tandem hydraulic pump, a secondary tandem pump, and a control module. The battery pack is configured to supply direct current (DC) electric energy to the system upon activation. The ignition switch is operatively connected to the battery pack and is configured to initiate a flow of electric energy from the battery pack when turned ON to activate the electric vehicle's electrical and mechanical systems. The electric motor is electrically coupled to the battery pack and is configured to receive the electrical energy from the battery pack and convert the received electrical energy into mechanical rotational energy. The propeller shaft is operatively coupled to the electric motor and configured to transmit the mechanical rotational energy.
The power take-off (PTO) unit is operatively connected to the propeller shaft. Further, the PTO unit comprises an input drive that receives mechanical input and is configured to distribute the mechanical rotational energy. The input drive includes a first output drive, a second output drive, a third output drive, and a fourth output drive. The first output drive powers a tandem hydraulic pump, generating hydraulic pressure to actuate a plurality of hydraulic cylinders. The second output drives a secondary tandem pump to supplement or redundantly support the hydraulic system. The third output drive drives a driveline comprising a differential unit connected to the second and third axle wheels for vehicular propulsion. The fourth output drive is coupled to a belt pulley unit for vacuum and jetting operations.
The belt pulley unit comprises a first belt pulley and a second belt pulley. The first belt pulley is configured to drive a vacuum pump for the suction of waste materials into a storage tank. The second belt pulley is configured to drive a jetting pump for delivering high-pressure water for cleaning and excavation. The tandem hydraulic pump and the secondary tandem pumps are configured to generate pressure for actuating a plurality of hydraulic actuators.
The plurality of hydraulic actuators includes a tank tipping cylinder, a door opening cylinder, and a door clamping cylinder. The tank tipping cylinder is configured to tilt a waste storage tank for discharge. The door opening cylinder is configured to open rear or side doors for maintenance or discharge access. The door opening cylinder is configured to open the rear or side doors for maintenance or discharge access. The door clamping cylinder is configured to seal and lock the doors to prevent leakage during operation.
The control module comprises a control panel, a remote-control unit, and a programmable logic controller (PLC). The remote-control unit is communicatively coupled to the system of the electric vehicle and configured to transmit operational commands wirelessly to the system. The programmable logic controller (PLC) is operatively connected to the PTO unit, the pumps, and the hydraulic actuators are configured to manage operational sequences, safety interlocks, and automatic/manual control modes.
The present disclosure envisages a method of operating a battery-operated electric vehicle for sewage cleaning and suction evacuation. The method comprises following steps:
• activating an ignition switch to initiate a flow of electrical energy from a battery pack to an electric motor;
• converting the electrical energy into mechanical rotational energy via the electric motor;
• transmitting the mechanical rotational energy via a propeller shaft to a power take-off (PTO) unit;
• distributing the mechanical rotational energy from the PTO unit through:
o a first and second output drive to drive hydraulic pumps;
o a third output drive to drive a differential unit linked to propulsion wheels; and
o a fourth output drive to power a belt pulley unit connected to a vacuum pump and a jetting pump;
• actuating hydraulic cylinders via pressure from the pumps;
• monitoring, by sensors, tank fill level data in real-time;
• transmitting, by the sensors, the fill level data to the PLC;
• automatically triggering the system operations based on the fill level data, the system operations including tank tipping or pump shutdown when a threshold fill level is reached;
• displaying a system status on a human machine interface (HMI); and
• enabling remote control for safe and mobile operation via a control module.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
A system and a method for battery-operated electric vehicles for sewage cleaning and suction excavation of the present disclosure will now be described with the help of the accompanying drawing, in which:
Figure 1 illustrates a block diagram of a battery-operated system for a sewage cleaning and suction excavation electric vehicle, in accordance with an exemplary embodiment of the present disclosure; and
Figures 2A-2C illustrate a flowchart of the method for sewage cleaning and suction excavation, in accordance with an exemplary embodiment of the present disclosure.
LIST OF REFERENCE NUMERALS
100 - System
102 - Electric vehicle
102a - First axle wheel
102b - Second axle wheel
102c - Third axle wheel
104 - Battery pack
106 - Ignition switch
108 - Electric motor
110 - Propeller shaft
112 - Power take-off (PTO) unit
112a - Input drive
112a-1 - First output drive
112a-2 - Second output drive
112a-3 - Third output drive
112a-4 - Fourth output drive
114 - Belt pulley unit
114a - First belt pulley
114b - Second belt pulley
116 - Vacuum pump
118 - Jetting pump
120 - Differential unit
122 - Tandem hydraulic pump
124 - Secondary tandem pump
126 - Tank tipping cylinder
128 - Door opening cylinder
130 - Door clamping cylinder
132 - Control module
132a - Control panel
132b - Remote control unit
132c - Programmable logic controller (PLC)
134 - Sensor module
136 - Human Machine Interface (HMI)
138 - Hose reel
200 - Method
DETAILED DESCRIPTION
Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.
Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms "a,” "an," and "the" may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms "comprises," "comprising," “including,” and “having,” are open-ended transitional phrases and therefore specify the presence of stated features, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, elements, components, and/or groups thereof.
To address the issues of the existing sewage vehicles powered by combustion engines, the present disclosure envisages a battery-operated system for a sewage cleaning and suction excavation electric vehicle (hereinafter referred to as “system 100”) and a method of operating a battery-operated electric vehicle for sewage cleaning and suction evacuation. The system will now be described with reference to Figure 1 and the method 200 will be described with reference to Figures 2A-2C.
Figure 1 illustrates a block diagram of a battery-operated system 100 for a sewage cleaning and suction excavation electric vehicle 102, specifically adapted for sewage cleaning and suction excavation tasks. The battery-operated system 100 will be explained hereinbelow by explaining its architecture, components, functions, and the technical interrelations that collectively realize the system 100 capable of delivering emission-free, energy-efficient, and multifunctional performance for municipal and industrial waste management applications.
The electric vehicle 102 on which the system 100 is implemented comprises key structural elements such as a pair of first axle wheels 102a, second axle wheels 102b, and third axle wheels 102c. These wheels are foundational for maneuverability and support, whereas the first axle wheel 102a are non-driven and primarily responsible for directional control and load bearing, whereas the second and third axle wheels 102b, 102c are connected to the propulsion mechanism and are instrumental in driving the vehicle across operational sites.
The system comprises a battery pack 104, an ignition switch 106, an electric motor 108, a propeller shaft 110, a power take-off (PTO) unit 112, a belt pulley unit 114, a tandem hydraulic pump 122, a secondary tandem pump 124, and a control module 132.
A central feature of the system 100 is a battery pack 104, which serves as a primary energy source. The battery pack 104 is designed to store and supply the electrical energy needed for the operation of all electric vehicle 102 and auxiliary systems. The battery pack 104 is configured to supply direct current (DC) electric energy to the system upon activation.
The ignition switch 106 is operatively connected to the battery pack 104 and is configured to initiate a flow of electric energy from the battery pack 104 when turned ON to activate the electric vehicle's electrical and mechanical systems.
The electric motor 108 is electrically coupled to the battery pack 104 is configured to receive the electrical energy from the battery pack 104 and convert the received electrical energy into mechanical rotational energy. The electric motor 108 is the foundation for all downstream mechanical operations performed by the electric vehicle 102. The electric motor 108 is a high-efficiency electric motor that ensures that energy from the battery pack 104 is optimally utilized, providing both vehicular propulsion and mechanical energy for peripheral systems.
Mechanical energy generated by the electric motor 108 is conveyed via a propeller shaft 110. The propeller shaft 110 is operatively coupled to the electric motor 108 and configured to transmit the mechanical rotational energy. Then, this propeller shaft 110 transmits torque directly to a power transmission unit, specifically a power take-off (PTO) unit 112.
The power take-off (PTO) unit 112 is operatively connected to the propeller shaft 110. The PTO unit 112 comprises an input drive 112a that receives mechanical input and is configured to distribute the mechanical rotational energy. The input drive 112a includes a first output drive 112a-1, a second output drive 112a-2, a third output drive 112a-3, and a fourth output drive 112a-4. The first output drive 112a-1 powers a tandem hydraulic pump 122 for generating hydraulic pressure to actuate a plurality of hydraulic cylinders. The second output 112a-2 drives a secondary tandem pump 124 to supplement or redundantly support the hydraulic system. The propulsion of the electric vehicle 102 is supported via the third output drive 112a-3 of the PTO unit 112, which is mechanically linked to a driveline of the electric vehicle 102. The third output drive 112a-3 drives the driveline comprising a differential unit 120 connected to second 102b and third axle 102c wheels. The fourth output drive 112a-4 is coupled to a belt pulley unit 114 for vacuum and jetting operations.
In another embodiment, the differential unit 120 enables differential torque distribution to the second axle wheels 102b and the third axle wheels 102c during vehicle manoeuvring. The differential unit 120 plays a critical role in permitting differential wheel rotation, which is essential when the vehicle 102 makes turns, ensuring both torque transmission and traction stability. The power thus transmitted enables the vehicle 102 to navigate various terrains encountered during sewage treatment and excavation tasks, ensuring mobility without compromising efficiency or control.
In an embodiment, the PTO unit 112 supports simultaneous or selective actuation of any or all of the four output drives 112a-1, 112a-2, 112a-3, 112a-4.
The belt pulley unit 114 comprises a first belt pulley 114a and a second belt pulley 114b. The first belt pulley 114a is configured to drive a vacuum pump 116 for the suction of waste materials into a storage tank. The vacuum pump 116 generates a vacuum environment to lift and transfer liquid or semi-solid waste into designated containment compartments. Concurrently, the second belt pulley 114b is configured to drive a jetting pump 118 for delivering high-pressure water for cleaning and excavation. The tandem hydraulic pump 122 and the secondary tandem pumps 124 are configured to generate pressure for actuating a plurality of hydraulic actuators. The plurality of hydraulic actuators includes a tank tipping cylinder 126, a door opening cylinder 128, and a door clamping cylinder 130. The tank tipping cylinder 126 is configured to tilt a waste storage tank for discharge. The door opening cylinder 128 is configured to open rear or side doors for maintenance or discharge access. The door opening cylinder 128 is configured to open rear or side doors for maintenance or discharge access. The door clamping cylinder 130 is configured to seal and lock the doors to prevent leakage during operation.
In an embodiment, the belt pulley unit 114 is modularly mounted to facilitate tool-less replacement of the vacuum pump 116 or the jetting pump 118, wherein the modular configuration enables decoupling of the pumps without disassembly of the entire PTO drive assembly or disruption to other system components.
In an embodiment, if one of the output drives or one side of the belt pulley mechanism fails, for example, if the vacuum pump drive pulley fails, the remaining pulleys and output drives continue to operate normally. This is further supported by the use of multiple V-belts, making simultaneous failure highly unlikely under normal operating conditions. The system of the battery-operated electric vehicle ensures that even if a single functional component in the belt-driven mechanism becomes non-operational, other subsystems remain unaffected.
The control module 132 comprises a control panel 132a, a remote-control unit 132b, and a programmable logic controller (PLC) 132c.
The control panel 132a comprises a human-machine interface (HMI) 136 configured to display real-time operational parameters and sensor data received from the PLC 132c.
The remote-control unit 132b is communicatively coupled to the system 100 of the electric vehicle 102 and configured to transmit operational commands wirelessly to the system. The remote-control unit 132b is configured for bidirectional communication with the PLC 132c to enable remote monitoring and operation within a preset range from the electric vehicle 102.
The programmable logic controller (PLC) 132c is operatively connected to the PTO unit 112, the pumps (116, 118, 122, 124) and the hydraulic actuators (126, 128, 130) are configured to manage operational sequences, safety interlocks, and automatic/manual control modes.
In an embodiment, the programmable logic controller (PLC) 132c is further configured to execute real-time diagnostics on the electric motor 108, the PTO unit 112, and the hydraulic actuators 126, 128, 130, and initiate fail-safe protocols including shutdown or restricted operation mode upon detecting abnormal conditions such as overheating, low voltage, or hydraulic pressure anomalies.
In another embodiment, the vacuum pump 116 and jetting pump 118 are configured to be independently or simultaneously operated based on signals from the PLC 132c, depending on the operation sequence.
The system 100 further includes a sensor module 134, including radar-based sensors mounted on the waste storage tank. The sensor module 134 is configured to measure internal fill level data of waste material in real-time and transmit the fill level data to the PLC 132c for automated actuation of the tank tipping cylinder 126 and control activation or deactivation of the vacuum pump 116.
Further, the system 100 eliminates the need for traditional combustion engines, thus eradicating direct emissions and significantly reducing noise levels. Such an architecture is particularly advantageous in urban environments where regulatory limitations on noise and emissions are strictly enforced. The system’s reliance on electrical energy from the battery pack 104 also lowers operational costs by minimizing fuel expenditure and reducing mechanical wear and tear due to fewer moving parts, thereby extending the service life of individual components.
Figures 2A-2C illustrate a flow chart depicting the steps involved in operating a battery-operated electric vehicle for sewage cleaning and suction evacuation in accordance with an embodiment of the present disclosure. The order in which method (200) is described is not intended to be construed as a limitation, and any number of the described method steps may be combined in any order to implement method (200), or an alternative method. Furthermore, method (200) may be implemented by processing resource or computing system(s) through any suitable hardware, non-transitory machine-readable medium/instructions, or a combination thereof. The method (200) comprises the following steps.
At step 202, the method 200 includes activating an ignition switch 106 to initiate a flow of electrical energy from a battery pack 104 to an electric motor 108.
At step 204, the method 200 includes converting the electrical energy into mechanical rotational energy via the electric motor 108.
At step 206, the method 200 includes transmitting the mechanical rotational energy via a propeller shaft 110 to a power take-off (PTO) unit 112.
At step 208, the method 200 includes distributing the mechanical rotational energy from the PTO unit 112.
At step 208a, the method 200 includes a first and second output drive 112a-1, 112a-2 to drive hydraulic pumps 122, 124;
At step 208a, the method 200 includes a third output drive 112a-3 to drive a differential unit 120 linked to propulsion wheels 102b, 102c; and
At step 208a, the method 200 includes a fourth output drive 112a-4 to power a belt pulley unit 114 connected to a vacuum pump 116 and a jetting pump (118).
At step 210, the method 200 includes actuating hydraulic cylinders 126, 128, 130 via pressure from the pumps 122, 124.
At step 212, the method 200 includes monitoring, by sensors 134, tank fill level data in real-time.
At step 214, the method 200 includes transmitting, by the sensors 134, the fill level data to the PLC 132c.
At step 216, the method 200 includes automatically triggering the system operations based on the fill level data, the system operations including tank tipping or pump shutdown when a threshold fill level is reached
At step 218, the method 200 includes displaying a system status on a human machine interface (HMI) 136.
At step 220, the method 200 includes enabling remote control for safe and mobile operation via control module 132.
From an operational perspective, once the ignition switch 106 is turned on, the battery pack 104 delivers energy to the electric motor 108, which subsequently generates rotational energy conveyed via the propeller shaft 110 to the PTO unit 112. The PTO unit 112 distributes this energy according to task-specific requirements whether it be driving the vacuum pump 116 for suction, the jetting pump 118 for pressurized cleaning, or hydraulic pumps for manipulating various cylinders including the tank tipping cylinder 126, the door opening cylinder 128, and the door clamping cylinder 130. In parallel, the third output drive 112a-3 ensures that propulsion via the second and third axle wheels 102b, 102c, and steering via the first axle wheels 102a are effectively coordinated through the integration with the differential unit 120.
The structural and functional arrangement of these components within the system 100 reflects a thoughtfully engineered balance between energy efficiency, operational versatility, and mechanical robustness. Each component is selected and positioned to reduce complexity and improve reliability while maintaining compliance with safety and performance standards essential for urban sanitation applications. Moreover, the belt pulley unit 114 and the associated belt pulleys 114a and 114b not only simplify power transfer mechanisms but also provide a modular method of energy distribution that can be easily maintained and adjusted based on performance needs.
The modular nature of the PTO unit 112 allows for potential scalability or retrofitting of the system 100 into a range of electric vehicles 102 beyond sewage cleaning applications. Additionally, the mechanical layout supports redundancy and fault tolerance by ensuring that failure in one subsystem does not inherently compromise the operation of others, thereby enhancing reliability during field deployment.
The system in the present disclosure offers several technical advantages that enhance its operational efficiency, reliability, and adaptability for urban sanitation vehicles. Firstly, the integration of the battery pack, electric motor, and propeller shaft with a centralized PTO (Power Take-Off) unit allows for a unified and efficient energy distribution framework. This setup not only reduces energy losses through direct mechanical linkage but also enables flexible allocation of power to critical subsystems such as the vacuum pump, jetting pump, and hydraulic actuators. The inclusion of a differential unit in coordination with the third output drive ensures smooth propulsion and maneuverability by distributing power effectively to the driven axles and enabling steering control. The modular belt pulley arrangement simplifies the mechanical power transmission while offering ease of maintenance, reconfiguration, and load balancing, which is vital for varying sanitation tasks.
Furthermore, the compartmentalized layout of the system enhances fault tolerance ensuring that the failure of one function, such as suction or jetting, does not compromise overall vehicle operability. This improves operational uptime and reliability in field conditions. Importantly, the modular and scalable nature of the PTO unit supports retrofitting across different types of electric utility vehicles, promoting design reusability and cost-efficiency.
The foregoing description of the embodiments has been provided for purposes of illustration and is not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
TECHNICAL ADVANCES AND ECONOMIC SIGNIFICANCE
The present disclosure described herein above has several advantages including, but not limited to, the realization of system 100 for a sewage cleaning and suction excavation electric vehicle 102 that:
• enhances operational efficiency;
• is cost-efficient;
• improves environmental conditions and operational productivity;
• decreases maintenance requirements; and
• operates with zero carbon emissions.
The aspect herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
The foregoing description of the specific embodiments so fully reveals the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
The use of the expression “at least” or “at least one” suggests the use of one or more elements or ingredients or quantities, as the use may be in the embodiment of the disclosure to achieve one or more of the desired objects or results.
Any discussion of devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form a part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation. ,CLAIMS:WE CLAIM:
1. A battery-operated system (100) for a sewage cleaning and suction excavation electric vehicle (102), wherein said system (100) comprising:
• a battery pack (104) configured to supply direct current (DC) electric energy to said system (100) upon activation;
• an ignition switch (106) operatively connected to said battery pack (104) and configured to initiate a flow of electric energy from said battery pack (104) when turned ON so as to activate said electric vehicle's electrical and mechanical systems;
• an electric motor (108) electrically coupled to said battery pack (104) configured to receive said electrical energy from said battery pack (104) and convert said received electrical energy into mechanical rotational energy;
• a propeller shaft (110) operatively coupled to said electric motor (108) and configured to transmit said mechanical rotational energy;
• a power take-off (PTO) unit (112) operatively connected to said propeller shaft (110), said PTO unit (112) comprising an input drive (112a) to receive mechanical input and configured to distribute said mechanical rotational energy through:
o a first output drive (112a-1) to drive a tandem hydraulic pump (122) for generating hydraulic pressure to actuate a plurality of hydraulic cylinders;
o a second output drive (112a-2) to drive a secondary tandem pump (124) to supplement or redundantly support the hydraulic system;
o a third output drive (112a-3) to drive a driveline comprising a differential unit (120) connected to second (102b) and third axle wheels (102c) for vehicular propulsion;
o a fourth output drive (112a-4) coupled to a belt pulley unit (114) for vacuum and jetting operation;
• said belt pulley unit (114) comprising:
o a first belt pulley (114a) configured to drive a vacuum pump (116) for suction of waste materials into a storage tank; and
o a second belt pulley (114b) configured to drive a jetting pump (118) for delivering high-pressure water for cleaning and excavation;
• said tandem hydraulic pump (122) and said secondary tandem pumps (124) configured to generate pressure for actuating a plurality of hydraulic actuators (126, 128, 130) including:
o a tank tipping cylinder (126) configured to tilt a waste storage tank for discharge;
o a door opening cylinder (128) configured to open rear or side doors for maintenance or discharge access and;
o a door clamping cylinder (130) configured to seal and lock the doors to prevent leakage during operation; and
• a control module (132) comprising:
o a control panel (132a);
o a remote-control unit (132b) communicatively coupled to said system of electric vehicle and configured to transmit operational commands wirelessly to said system; and
o a programmable logic controller (PLC) (132c) operatively connected to said PTO unit (112), said pumps (116, 118, 122, 124), and said hydraulic actuators (126, 128, 130), and configured to manage operational sequences, safety interlocks, and automatic/manual control modes.
2. The system (100) as claimed in claim 1, further includes a sensor module (134) including radar-based sensors mounted on said waste storage tank, wherein said radar-based sensors configured to:
• measure internal fill level data of waste material in real time; and
• transmit the fill level data to the PLC (132c) for automated actuation of the tank tipping cylinder (126) and control activation or deactivation of the vacuum pump (116).
3. The system (100) as claimed in claim 1, wherein said PTO unit (112) supports simultaneous or selective actuation of any or all of said four output drives (112a-1, 112a-2, 112a-3, 112a-4).
4. The system (100) as claimed in claim 1, wherein said control panel (132a) comprises a human-machine interface (HMI) (136) configured to display real-time operational parameters and sensor data received from the PLC (132c).
5. The system (100) as claimed in claim 1, wherein said remote control unit (132b) is configured for bidirectional communication with said PLC (132c) to enable remote monitoring and operation within a preset range from said electric vehicle (102).
6. The system (100) as claimed in claim 1, wherein said differential unit (120) enables differential torque distribution to said second axle wheel (102b) and third axle wheel (102c) during vehicle maneuvering.
7. The system (100) as claimed in claim 1, wherein said vacuum pump (116) and jetting pump (118) are configured to be independently or simultaneously operated based on signals from said PLC (132c), depending on the operation sequence.
8. The system (100) as claimed in claim 1, wherein said programmable logic controller (PLC) (132c) is further configured to execute real-time diagnostics on the electric motor (108), the PTO unit (112), and the hydraulic actuators (126, 128, 130), and initiate fail-safe protocols including shutdown or restricted operation mode upon detecting abnormal conditions such as overheating, low voltage, or hydraulic pressure anomalies.
9. The system (100) as claimed in claim 1, wherein the belt pulley unit (114) is modularly mounted to facilitate tool-less replacement of the vacuum pump (116) or the jetting pump (118), wherein said modular configuration enables decoupling of said pumps without disassembly of the entire PTO drive assembly or disruption to other system components.
10. A method (200) of operating a battery-operated electric vehicle (102) for sewage cleaning and suction evacuation, said method (200) comprising the steps of:
• activating an ignition switch (106) to initiate flow of electrical energy from a battery pack (104) to an electric motor (108);
• converting the electrical energy into mechanical rotational energy via the electric motor (108);
• transmitting said mechanical rotational energy via a propeller shaft (110) to a power take-off (PTO) unit (112);
• distributing the mechanical rotational energy from the PTO unit (112) through:
o a first and second output drive (112a-1, 112a-2) to drive hydraulic pumps (122, 124);
o a third output drive (112a-3) to drive a differential unit (120) linked to propulsion wheels (102b, 102c); and
o a fourth output drive (112a-4) to power a belt pulley unit (114) connected to a vacuum pump (116) and a jetting pump (118);
• actuating hydraulic cylinders (126, 128, 130) via pressure from said pumps (122, 124);
• monitoring, by sensors (134), tank fill level data in real-time;
• transmitting, by the sensors (134), the fill level data to said PLC (132c);
• automatically triggering said system operations based on the fill level data, said system operations including tank tipping or pump shutdown when a threshold fill level is reached;
• displaying a system status on a human machine interface (HMI) (136); and
• enabling remote control for safe and mobile operation via control module (132).

Dated this 25th day of June, 2025

_______________________________
MOHAN RAJKUMAR DEWAN, IN/PA – 25
OF R. K. DEWAN & CO.
AUTHORIZED AGENT TO THE APPLICANT

TO,
THE CONTROLLER OF PATENTS
THE PATENT OFFICE, MUMBAI