DESC:FORM 2

THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003

COMPLETE SPECIFICATION
(See Section 10 and Rule 13)

Title of invention:
A MICROFILTRATION SYSTEM IN HYDRAULIC CIRCUIT
OF A VEHICLE

Applicant:
BEML Limited
A company Incorporated in India under the Companies Act, 1956
Having address:
BEML Soudha, 23/1, 4th Main,
Sampangirama Nagar, Bengaluru - 560 027,
Karnataka, India

The following specification particularly describes the invention and the manner in which it is to be performed.
CROSS-REFERENCE TO RELATED APPLICATIONS AND PRIORITY

[001] The present invention claims priority from Indian patent Provisional Application 202041006345 filed on 13 February 2020.

TECHNICAL FIELD

[002] The present invention relates to hydraulic circuit of vehicles and more particularly to a microfiltration system in the hydraulic circuit of a vehicle.

BACKGROUND OF THE INVENTION

[003] Conventionally, work machines such as hydraulic excavators or off highway vehicles (OHV) are often used in work sites where the working environment is harsh (for example, in environments where high-concentration dust exists or in humid environments). For example, hydraulic actuator cylinders In order to supply the hydraulic oil by mixing dust and moisture into the oil from the oil seals of parts and the oil seals of various valve devices installed in the oil line that controls the supply of hydraulic oil for hydraulic actuators The oil pumps and hydraulic actuator sliding parts are likely to increase wear, and frequent oil changes, maintenance of each part, overhaul in a short cycle, and replacement of the work machine itself are required.

[004] In an Off Highway vehicle (OHV) the pollution of hydraulic oil can be divided into two types of solid particle and moisture. In the solid particle, contamination particle and difference gap be size seldom, adds that intrasystem machine power has harmfulness most, and size can be to 2-5 µ m in system in this power gap. Moisture can increase the hydraulic oil acid number, causes corrosion of elements, and makes hydraulic oil emulsification, hydrolysis, oxidation, destroys additive, causes various hydraulic faults.

[005] A standard filter on an OHV hydraulic system circuit are unable to filter all the contaminant. As a result, the hydraulic oil becomes a cause of problem by accelerating wear, reducing an efficiency of a system and eventually leading to breakdown of the system.

[006] Therefore, it would be desirable and advantageous to obtain a more durable filter, with ultra fine filtration, compact, light, with low operating cost, easy installation and maintenance.

OBJECTS OF THE INVENTION

[007] The object of the invention is to introduce a microfiltration system in hydraulic circuit of a vehicle.

[008] Another object of the invention is to reduce the failure or breakdown of hydraulic actuators of a vehicle due to contamination of oil.

[009] Yet another object of the invention is to increase the hydraulic oil change interval of the vehicle.

SUMMARY OF THE INVENTION

[0010] Before the present system and method are described, it is to be understood that this application is not limited to the particular machine or an apparatus, and methodologies described, as there can be multiple possible embodiment that are not expressly illustrated in the present disclosure. It is also to be understood that the terminology used in the description is for the purpose of describing the particular version or embodiment only and is not intended to limit the scope of the present application. This summary is provided to introduce aspects related to a microfiltration system in the hydraulic circuit of a vehicle, and the aspects are further elaborated below in the detailed description. This summary is not intended to identify essential features of the proposed subject matter nor is it intended for use in determining or limiting the scope of the proposed subject matter.

[0011] In one implementation, a microfiltration system in the hydraulic circuit of a vehicle is described. The filter medium consists of a long fibre composed of cellulose and polypropylene. Further, a high-quality fibre medium and a special aligned construction of a system, ensures a high retention capability and effective filtration of dirt and moisture.

[0012] With the introduction of microfiltration unit on vehicle the oil cleanliness level is maintained. NAS level of the oil is improved. The life of the hydraulic actuators increases. The system improves the reliability of the hydraulic system.

STATEMENT OF INVENTION

[0013] Accordingly, the present invention discloses a microfiltration system in the hydraulic circuit of a vehicle to filter contaminants from oil.

[0014] Accordingly, the present invention discloses a microfiltration system, which is configured to be connected to a high-pressure line in a hydraulic circuit while the output of the microfiltration system is further connected to the low-pressure line of the hydraulic circuit. The filter medium of microfiltration unit is made of long fibre of cellulose and polypropylene. The microfiltration unit is configured is to filter the filtrate of 1 micron and above. The microfiltration unit reduces vehicle breakdown, downtime and extend the oil change interval.

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The foregoing summary, as well as the following detailed description of embodiment, is better understood when read in conjunction with the appended drawing. For the purpose of illustrating the disclosure, the disclosure is not limited to the specific methods and apparatus disclosed in the document and the drawing.

[0016] The detailed description is described with reference to the accompanying figure. In the figure, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawing to refer like features and components.
[0017] Figure 1 illustrates a micro-filtration unit mounted on the bracket of vehicle in accordance to the present disclosure.

[0018] Figure 2 illustrates a block diagram of the hydraulic oil filtration system, in accordance to the present disclosure.

[0019] Figures depict various embodiments of the present disclosure for purpose of illustration only. Only skilled in the art will readily recognize from the following discussion that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION OF THE INVENTION

[0020] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words “comprising”, “having”, and “including,” and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items. Although any systems and methods similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary, systems and methods are now described. The disclosed embodiments are merely exemplary of the disclosure, which may be embodied in various forms.

[0021] Various modification to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to another embodiment. However, one of ordinary skill in the art will readily recognize that the present disclosure is not intended to be limited to the embodiments illustrated but is to be accorded the widest scope consistent with the principles and features described herein.

[0022] The oil when it is exposed to dirt loses its lubricating effect and leads to failure or downtime of hydraulic systems. The standard filter on vehicle hydraulic system circuit are not efficient to filter all the contaminants. As a result, a hydraulic oil that is used for powering an equipment leads to various problems like an accelerating wear, reducing efficiency of a system and eventually break down of the equipment. Hence, the present disclosure discloses a microfiltration system that prevents the breakdown in a vehicle by maintaining cleanliness of the oil. Further, the microfiltration system disclosed ensures protection against failure of the hydraulic actuators, which is caused by the contaminated oil.

[0023] The microfiltration system is composed of length fibres. Further, the filter medium compose of long fibre of cellulose and polypropylene. A high-quality filter medium and a special alignment of a system ensures high particle retention capability and effective filtration in water.

[0024] Figure 1 shows a hydraulic filtration system in vehicle (100) comprising of microfiltration unit (20), bracket (24) and hydraulic circuit (40).

[0025] Figure 2 shows the block diagram of system where a microfiltration unit (20) system is configured in vehicle to filter contaminants from oil. From the figure it is observed that an inlet of the microfiltration (20) system is connected to a high-pressure line (Max pressure 350 bar) in a hydraulic circuit (40) of the vehicle. An output of the microfiltration (20) system is further connected to the return (low pressure) line (Max pressure 6 bar) of the circuit. The system is further connected in bypass with an existing vehicle hydraulic circuit to ensure smooth operations. With the introduction of this new system, hydraulic oil is cleaned by filtering out solid particles down to 1 micron & contain water effectively with in the cartridge.

[0026] With the introduction of microfiltration unit in the hydraulic system of vehicle, it extends the oil change interval of the vehicle leading to an increased environmental protection.

[0027] The microfiltration unit prevents breakdown in a vehicles by maintaining cleanliness of an oil.

[0028] With the introduction of microfiltration unit on vehicle, it avoids the malfunction of vehicle and reduces downtimes.

[0029] REFERRAL NUMERALS:
Element Description Reference Numeral
microfiltration Unit 20
bracket 24
hydraulic circuit System 40
hydraulic filtration system in vehicle 100

,CLAIMS:
1. A microfiltration system in hydraulic circuit of vehicle (100) comprising of,
atleast one microfiltration unit (20) configured to be mounted in line of a hydraulic circuit (40).

2. A microfiltration system in hydraulic circuit of vehicle (100) as claimed in claim 1, wherein microfiltration (20) system is configured to be connected to a high-pressure line (Max pressure 350 bar) in a hydraulic circuit (40) while the output of the microfiltration (20) system is further connected to the return (low pressure) line (Max pressure 6 bar) of the hydraulic circuit.

3. A microfiltration system in hydraulic circuit of vehicle (100) as claimed in claim 1, wherein the filter medium of microfiltration unit (20) is configured from long fibre of cellulose and polypropylene.

4. A microfiltration system in hydraulic circuit of vehicle (100) as claimed in claim 1, wherein the microfiltration unit (20) is configured to filter the filtrate of 1 micron and above.

5. A microfiltration system in hydraulic circuit of vehicle (100) as claimed in claim 1, wherein microfiltration (20) system is configured to be mounted on bracket (24).

6. A microfiltration system in hydraulic circuit of vehicle (100) as claimed in claim 1, wherein the microfiltration unit (20) is configured to reduce vehicle breakdown, downtime and extend the oil change interval.