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 SYSTEM AND METHOD FOR PREVENTING FAILURE OF OFF-ROAD HEAVY DUTY DIESEL ENGINE

Applicant:
BEML Limited
A company Incorporated in India under the Companies Act, 1956
Having Address As:
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 application numbered IN 202241046861 filed on 17th August, 2022.

FIELD OF THE INVENTION
[002] The present subject matter described herein generally relates to a system and method for preventing failure of off-road heavy duty diesel engine, and more specifically the system and method for preventing failure of off-road heavy duty diesel engine due to dust entry into air intake system.
BACKGROUND
[003] Internal combustion of an engine relies on the air supplied to the combustion chambers of the internal combustion engine. The combustion air is drawn from the surroundings of the internal combustion engine. The quality of the intake air of the engine has a crucial influence on the emission and the service life of the engine. The IC engines are designed to operate in a designated range of temperatures. Even for a short duration, when the engine temperature arises above the threshold value the engine performance is diminished and severe damage is done to the engine at extreme temperatures. Such damage can include burned valves, head gasket failures, engine block distortion, burning and scoring of pistons, carbon deposits behind piston rings and on injector tips, piston ring failures with resultant high oil consumption and blow by, lubrication oil dilution and others.
[004] The rise in excessive engine temperatures is commonly caused due to air filter clogging. When the air filters are clogged, the available inlet air is decreased and the air/fuel ratio becomes too rich, thereby causing the engine temperature to increase. This requires that the air filter is kept at a good filtering state and can filter the air entering the engine. But the blockage, the breakage or the disconnection of the air filter can affect the emission and even cause the engine temperature to reach levels sufficient to cause the above-mentioned damages during the process.
[005] Hence to overcome the aforesaid drawbacks there is a requirement to provide a system to prevent failure of off-road heavy duty diesel engine.

OBJECTS OF THE INVENTION
[006] Main object of the present disclosure is to provide a system and method for preventing failure of off-road heavy duty diesel engine to regulate the engine power based on the filter choking.
[007] Another object of the present disclosure is to provide the system and method for preventing failure of off-road heavy duty diesel engine to regulate the engine power based on the pressure drop.
[008] Yet another object of the present disclosure is to provide the system and method for preventing failure of off-road heavy duty diesel engine to acts as a preventive maintenance for safeguarding engine.
[009] Another object of the present disclosure is to provide the system and method for preventing failure of off-road heavy duty diesel engine to avoid premature failure of engine because of dust entry.
[0010] Yet another object of the present disclosure is to provide the system and method for preventing failure of off-road heavy duty diesel engine to prevent failure of further components.
[0011] Another object of the present disclosure is to provide the system and method for preventing failure of off-road heavy duty diesel engine to alert the operator to change the clogged air filter.
[0012] Yet another object of the present disclosure is to provide the system and method for preventing failure of off-road heavy duty diesel engine to improve efficiency of lubrication oil consumption and fuel consumption.
[0013] Another object of the present disclosure is to provide the system and method for preventing failure of off-road heavy duty diesel engine to reduce the blow-by rate.
[0014] Yet another object of the present disclosure is to provide the system and method for preventing failure of off-road heavy duty diesel engine which is compact, cost effective and easy to implement.

SUMMARY
[0015] Before the present system is described, it is to be understood that this application is not limited to the particular machine, device or system, as there can be multiple possible embodiments that are not expressly illustrated in the present disclosures. It is also to be understood that the terminology used in the description is for the purpose of describing the particular versions or embodiments only, and is not intended to limit the scope of the present application. This summary is provided to introduce aspects related to a system and method for preventing failure of off-road heavy duty diesel engine due to dust entry into air intake system, 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.
[0016] The present subject matter discloses a system for preventing failure of off-road heavy duty diesel engine comprising an air filter to filter an ambient air flow entering a combustion chamber, a preselected sensor mounted on the entry path of the ambient air flow on the air filter, a predetermined sensor mounted on the exit of the air filter into an intake manifold. A processor to receive signals from the preselected sensor and the predetermined sensor. A fuel injection equipment (FIE) is operated by the processor. The fuel injection equipment (FIE) mounted infront of an engine. An alarm to generate an alert.
[0017] A method for preventing failure of off-road heavy duty diesel engine system comprising the steps of measuring the pressure of the air at the entry and exist of the air filter. Plurality of sensors are mounted in the entry and exist of the air filter. A processor receives signals from the plurality of sensors. A pressure drop (?p) between the plurality of sensors is calculated by the processor. A fuel injection equipment (FIE) is operated by the processor to reduce fuelling. The pressure drop (?p) reaches the threshold limit. The processor alerts to clean the clogged air filter. The processor operates an engine at less than the full load.
STATEMENT OF INVENTION
[0018] The present subject matter discloses, a system for preventing failure of off-road heavy duty diesel engine comprising an air filter to filter an ambient air flow entering a combustion chamber, a preselected sensor mounted on the entry path of the ambient air flow on the air filter, a predetermined sensor mounted on the exit of the air filter into an intake manifold. A processor to receive signals from the preselected sensor and the predetermined sensor. A fuel injection equipment (FIE) is operated by the processor. The fuel injection equipment (FIE) mounted infront of an engine. An alarm to generate an alert.
[0019] In an embodiment, the preselected sensor is a pressure sensor.
[0020] In an embodiment, the predetermined sensor is an air flow rate sensor.
[0021] In an embodiment, the preselected sensor and the predetermined sensor measures pressure of the air at the entry and exist of the air filter respectively.
[0022] In an embodiment, the processor is an ECU.
[0023] In another embodiment, a method for preventing failure of off-road heavy duty diesel engine system comprising the steps of measuring the pressure of the air at the entry and exist of the air filter. Plurality of sensors are mounted in the entry and exist of the air filter. A processor receives signals from the plurality of sensors. A pressure drop (?p) between the plurality of sensors is calculated by the processor. A fuel injection equipment (FIE) is operated by the processor to reduce fuelling. The pressure drop (?p) reaches the threshold limit. The processor alerts to clean the clogged air filter. The processor operates an engine at less than the full load.
[0024] In an embodiment, the plurality of sensors are a pressure sensor, an air flow rate sensor mounted in the entry and exist of the air filter respectively.
[0025] In an embodiment, the threshold limit of the pressure drop is 70 mbar.
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The foregoing summary, as well as the following detailed description of embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the disclosure, there is shown in the present document example constructions of the disclosure, however, the disclosure is not limited to the specific methods and device disclosed in the document and the drawing. The detailed description is described with reference to the following accompanying figures.
[0027] Figure 1 illustrates a block diagram of a system for preventing failure of off-road heavy duty diesel engine, in accordance with an embodiment of the present subject matter.
[0028] Figure 2 illustrates a flowchart for a method for preventing failure of off-road heavy duty diesel engine, in accordance with an embodiment of the present subject matter.
[0029] The figures depict various embodiments of the present disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following discussion that alternative embodiments of the structures illustrated herein may be employed without departing from the principles of the disclosure described herein.
DETAILED DESCRIPTION OF INVENTION
[0030] 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. It must also be noted that as used herein and in the appended claims, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Although any devices 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, devices and methods are now described. The disclosed embodiments are merely exemplary of the disclosure, which may be embodied in various forms.
[0031] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. 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.
[0032] The present subject matter discloses a system (100) for preventing failure of off-road heavy duty diesel engine as shown in figure 1. An air filter (106) is provided to filter an ambient air flow (102) entering a combustion chamber. The intake ambient air (102) is filtered before going into the combustion chamber. A preselected sensor (104) is mounted on the entry path of the ambient air flow (102) on the air filter (106). The preselected sensor (104) is a pressure sensor (104). A predetermined sensor (108) is mounted on the exit of the air filter (106) into an intake manifold. The predetermined sensor (108) is an air flow rate sensor (108). The air flow rate sensor is also referred as a filter clog sensor (108). A processor (112) receives signals from the preselected sensor (104) and the predetermined sensor (108). The processor (112) is an ECU. A fuel injection equipment (FIE) (114) is operated by the processor (112). The fuel injection equipment (FIE) (114) is mounted infront of an engine (118). An alarm is generated for an alert.
[0033] Now referring to figure 2, a method (200) for preventing failure of off-road heavy duty diesel engine is disclosed. In step 202, the pressure of the air at the entry and exist of the air filter (106) is measured. Further, plurality of sensors are configured to be mounted in the entry and exist of the air filter (106). In step 204, a processor (112) receives signals from the plurality of sensors (104, 108). In step 206, a pressure drop (?p) (110) between the plurality of sensors (104, 108) is calculated by the processor (112). In step 208, a fuel injection equipment (FIE) (114) is operated by the processor (112) to reduce fuelling when the pressure drop (?p) (110) reaches the threshold limit. In step 210, the processor (112) alerts to clean the clogged air filter (106). And, the processor (112) operates an engine (118) at less than the full load.
[0034] The sensors (104, 108) measures pressure of the air at the entry and exist of the air filter (106) respectively. The ECU (112) receives signals from the pressure sensor (104) and the clog sensor (108) at step 120 and step 122 respectively. Further, the ECU (112) calculates the pressure drop (?p) (110) between the pressure sensor (104) and the clog sensor (108). Once the air filter (106) is clogged the pressure drop (?p) (110) increases. When the pressure drop (?p) (110) reaches the threshold limit, the ECU (112) operates the fuel injection equipment (FIE) (114) at step 124 and reduces the fuelling as shown in step 116. This results in operating the engine (118) at less than the full load unless the air filter (106) is cleaned. The ECU (112) issues an alarm to clean the clogged air filter (106). The threshold limit of the pressure drop is 70 mbar.
[0035] Exemplary embodiments discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, these advantages may include the following.
[0036] Some embodiments of the subject matter enable to provide the system and method for preventing failure of off-road heavy duty diesel engine to regulate the engine power based on the filter choking.
[0037] Some embodiments of the subject matter enable to provide the system and method for preventing failure of off-road heavy duty diesel engine to regulate the engine power based on the pressure drop.
[0038] Some embodiments of the subject matter enable to provide the system and method for preventing failure of off-road heavy duty diesel engine to acts as a preventive maintenance for safeguarding engine.
[0039] Some embodiments of the subject matter enable to provide the system and method for preventing failure of off-road heavy duty diesel engine to avoid premature failure of engine because of dust entry.
[0040] Some embodiments of the subject matter enable to provide the system and method for preventing failure of off-road heavy duty diesel engine to prevent failure of further components.
[0041] Some embodiments of the subject matter enable to provide the system and method for preventing failure of off-road heavy duty diesel engine to alert the operator to change the clogged air filter.
[0042] Some embodiments of the subject matter enable to provide the system and method for preventing failure of off-road heavy duty diesel engine to improve efficiency of lubrication oil consumption and fuel consumption.
[0043] Some embodiments of the subject matter enable to provide the system and method for preventing failure of off-road heavy duty diesel engine to reduce the blow-by rate.
[0044] Some embodiments of the subject matter enable to provide the system and method for preventing failure of off-road heavy duty diesel engine which is compact, cost effective and easy to implement
[0045] Following is a list of elements and reference numerals used to explain various embodiments of the present subject matter.

Reference Numeral Element Description
100 System for detecting clogged air filters
102 Flow direction of Ambient Air
104 Pressure Sensor
106 Air Filter
108 Clog Sensor
110 Pressure Difference
112 ECU
114 Fuel Injection Equipment
116 Fuelling
118 Engine
Equivalents
[0046] With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
[0047] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "includes but is not limited to," etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to "at least one of A, B, and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances, where a convention analogous to "at least one of A, B, or C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, or C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B."
[0048] Although implementations for the system and method for preventing failure of off-road heavy duty diesel engine have been described in language specific to structural features and/or methods, it is to be understood that the appended claims are not necessarily limited to the specific features described. Rather, the specific features are disclosed as examples of implementation for the system and method for preventing failure of off-road heavy duty diesel engine.
,CLAIMS:
1. A system (100) for preventing failure of off-road heavy duty diesel engine comprising:
an air filter (106) configured to filter an ambient air flow (102) entering a combustion chamber;
a preselected sensor (104) configured to be mounted on the entry path of the ambient air flow (102) on the air filter (106);
a predetermined sensor (108) configured to be mounted on the exit of the air filter (106) into an intake manifold;
a processor (112) configured to receive signals from the preselected sensor (104) and the predetermined sensor (108);
a fuel injection equipment (FIE) (114) configured to be operated by the processor (112); wherein the fuel injection equipment (FIE) (114) is configured to be mounted infront of an engine (118); and
an alarm configured to generate an alert.
2. The system (100) as claimed in claim 1, wherein the preselected sensor (104) is configured to be a pressure sensor (104).
3. The system (100) as claimed in claim 1, wherein the predetermined sensor (108) is configured to be an air flow rate sensor (108).
4. The system (100) as claimed in claim 1, wherein the preselected sensor (104) and the predetermined sensor (108) is configured to measures pressure of the air at the entry and exist of the air filter (106) respectively.
5. The system (100) as claimed in claim 1, wherein the processor (112) is configured to be an ECU.
6. A method (200) for preventing failure of off-road heavy duty diesel engine system comprising the steps of:
measuring, the pressure of the air at the entry and exist of the air filter (106), wherein plurality of sensors are configured to be mounted in the entry and exist of the air filter (106);
receiving, through a processor (112) signals from the plurality of sensors (104, 108);
calculating, a pressure drop (?p) (110) between the plurality of sensors (104, 108) by the processor (112);
operating, a fuel injection equipment (FIE) (114) by the processor (112) to reduce fuelling, wherein the pressure drop (?p) (110) reaches the threshold limit; and
alerting, to clean the clogged air filter (106) by the processor (112); wherein the processor (112) operates an engine (118) at less than the full load.
7. The method (200) as claimed in claim 6, wherein the plurality of sensors (104, 108) are configured to be a pressure sensor (104), an air flow rate sensor (108) mounted in the entry and exist of the air filter (106) respectively.
8. The method (200) as claimed in claim 6, wherein the threshold limit of the pressure drop is configured to be 70 mbar.