Description:TECHNICAL FIELD
[0001] The present disclosure relates to diesel engine. More particularly the present disclosure relates a piston with compression ring having a unique cross-section for reduced emission to the atmosphere.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Conventionally, internal combustion engine such as but not limited to a diesel engine comprises a piston that is configured to slide/move in a cylinder. The piston and the rings are tightly held between walls of the cylinder such that there is will be minimum leakage of blowby gases from the cylinder. The blowby gases are produced due to combustion of fuel inside the cylinder. The piston comprises a plurality of grooves that are used for accommodating a plurality of compression rings that facilitates reduction of the blowby gases inside the cylinder. The leakage of the blowby gases from the cylinder into crankcase can lead to oil consumption and emission which is undesirable. These plurality of compression rings usually have rectangular or trapezoidal cross-sections, and are angles at one side. However, still there is a leakage of blowby gases from the cylinder which is undesirable and reduces engine’s efficiency.
[0004] There is, therefore, a need for an improved compression rings for the piston that can efficiently reduce the leakage of blowby gases from the cylinder.

OBJECTS OF THE PRESENT DISCLOSURE
[0005] Some of the objects of the present disclosure, which at least one embodiment herein satisfy are as listed herein below.
[0006] It is an object of the present disclosure to provide a piston with compression ring, which is capable of reducing the blowby gases inside the cylinder.
[0007] It is an object of the present disclosure to provide a piston with compression ring, which reduces the emission to the atmosphere since escape of blowby gases is reduced.
[0008] It is an object of the present disclosure to provide a piston with compression ring, which increase engine durability and efficiency as there is reduction in emission to the atmosphere since escape of blowby gases is reduced.

SUMMARY
[0009] The present disclosure relates to diesel engine. More particularly the present disclosure relates a piston with compression ring having a unique cross-section for reduced emission to the atmosphere.
[0010] An aspect of the present disclosure pertains to a piston adapted to be used in a diesel engine. The piston includes a plurality of grooves at a circumference of piston. The piston includes a plurality of compression rings configured inside the plurality of grooves such that each of the plurality of compression rings is accommodated in at most one groove of the plurality of grooves. A first compression ring of the plurality of rings is configured in a first groove, of the plurality of grooves, having a corresponding profile with the first compression ring. A thickness of the first ring is linearly decreasing from an outer circumference of the first compression ring towards an inner circumference of the first compression ring.
[0011] In an aspect, a first angle between a first surface, from the outer circumference till the inner circumference of the compression ring, and a radial axis of the first compression ring may be concurrent to a second angle between a second surface opposite to the first surface, from the outer circumference till the inner circumference of the compression ring, and a radial axis of the first compression ring.
[0012] In an aspect, the first surface and the second surface may be flat surface.
[0013] In an aspect, a sum of the first angle and the second angle may be within a range of 3.0 - 18.0 degrees.
[0014] Yet another aspect of the present disclosure pertains to a diesel engine includes a cylinder having a cavity. A piston slidably configured inside the cavity. The piston includes a plurality of grooves at a circumference of piston, and a plurality of compression rings configured inside the plurality of grooves such that each of the plurality of compression rings is accommodated in at most one groove of the plurality of grooves. A first compression ring of the plurality of rings is configured in a first groove, of the plurality of grooves, having a corresponding profile with the first compression ring. A thickness of the first ring is linearly decreasing from an outer circumference of the first compression ring towards an inner circumference of the first compression ring.
[0015] In an aspect, a first angle between a first surface, from the outer circumference till the inner circumference of the compression ring, and a radial axis of the first compression ring may be concurrent to a second angle between a second surface opposite to the first surface, from the outer circumference till the inner circumference of the compression ring, and a radial axis of the first compression ring.
[0016] In an aspect, the first surface and the second surface may be flat surface.
[0017] In an aspect, a sum of the first angle and the second angle may be within a range of 3.0 - 18.0 degrees.
[0018] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF DRAWINGS
[0019] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure.
[0020] In the figures, similar components and/or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label.
[0021] FIG. 1 illustrates an exemplary representation a cross-sectional view of first the compression ring, in accordance with an embodiment of the present disclosure.
[0022] FIG. 2 illustrates a comparative blowby gases analysis between conventional and proposed piston, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION
[0023] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[0024] In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. It will be apparent to one skilled in the art that embodiments of the present invention may be practiced without some of these specific details.
[0025] The present disclosure relates to diesel engine. More particularly the present disclosure relates a piston with compression ring having a unique cross-section for reduced emission to the atmosphere.
[0026] The present disclosure elaborates upon a piston adapted to be used in a diesel engine. The piston includes a plurality of grooves at a circumference of piston. The piston includes a plurality of compression rings configured inside the plurality of grooves such that each of the plurality of compression rings is accommodated in at most one groove of the plurality of grooves. A first compression ring of the plurality of rings is configured in a first groove, of the plurality of grooves, having a corresponding profile with the first compression ring.A thickness of the first ring is linearly decreasing from an outer circumference of the first compression ring towards an inner circumference of the first compression ring.
[0027] In an embodiment, a first angle between a first surface, from the outer circumference till the inner circumference of the compression ring, and a radial axis of the first compression ring can be concurrent to a second angle between a second surface opposite to the first surface, from the outer circumference till the inner circumference of the compression ring, and a radial axis of the first compression ring.
[0028] In an embodiment, the first surface and the second surface can be flat surface.
[0029] In an embodiment, a sum of the first angle and the second angle can be within a range of 3.0 - 18.0 degrees.
[0030] Yet another embodiment of the present disclosure pertains to a diesel engine includes a cylinder having a cavity. A piston slidably configured inside the cavity. The piston includes a plurality of grooves at a circumference of piston, and a plurality of compression rings configured inside the plurality of grooves such that each of the plurality of compression rings is accommodated in at most one groove of the plurality of grooves. A first compression ring of the plurality of rings is configured in a first groove, of the plurality of grooves, having a corresponding profile with the first compression ring. A thickness of the first ring is linearly decreasing from an outer circumference of the first compression ring towards an inner circumference of the first compression ring.
[0031] In an embodiment, a first angle between a first surface, from the outer circumference till the inner circumference of the compression ring, and a radial axis of the first compression ring can be concurrent to a second angle between a second surface opposite to the first surface, from the outer circumference till the inner circumference of the compression ring, and a radial axis of the first compression ring.
[0032] In an embodiment, the first surface and the second surface can be flat surface.
[0033] In an embodiment, a sum of the first angle and the second angle can be within a range of 3.0 - 18.0 degrees.
[0034] FIG. 1 illustrates an exemplary representation a cross-sectional view of first the compression ring, in accordance with an embodiment of the present disclosure.
[0035] FIG. 2 illustrates a comparative blowby gases analysis between conventional and proposed piston, in accordance with an embodiment of the present disclosure.
[0036] As illustrated, a diesel engine can include a cylinder 102 having a cavity. A piston 104 can be slidably configured inside the cavity. The piston 104 can include a plurality of grooves 106-1, 106-2, and 106-3 (collectively referred as grooves 106, hereinafter) at a circumference of piston 104.A plurality of compression rings 108-1, 108-2, 108-3 (collectively referred as compression rings 108, hereinafter) can be configured inside the plurality of grooves 106 such that each of the plurality of compression rings 108 is accommodated in at most one groove of the plurality of grooves 106.
[0037] In an embodiment, a first compression ring 108-1 of the plurality of rings 108 can be configured in a first groove 106-1 of the plurality of grooves, having a corresponding profile with the first compression ring. A thickness of the first ring 108-1 can be linearly decreasing from an outer circumference 108-1a of the first compression ring 108-1 towards an inner circumference 108-1b of the first compression ring 108-1.
[0038] In an embodiment, a first angle ‘α1’ between a first surface 108-1c, from the outer circumference 108-1a till the inner circumference 108-1b of the first compression ring 108-1, and a radial axis 110 of the first compression ring 108-1 can be concurrent to a second angle ‘α2’ between a second surface 108-1d opposite to the first surface 108-1c, from the outer circumference 108-1a till the inner circumference 108-1b of the first compression ring 108-1, and the radial axis 110 of the first compression ring 108-1.A sum of the first angle ‘α1’and the second angle ‘α2’ can be within a range of 3.0 - 18.0 degrees.
[0039] The present disclosure proposed a piston with compression ring having a wedge at both sides radially extending towards a centre of the compression ring. This can facilitate reducing of the blowby gases inside the cylinder. This can reduce the emission to the atmosphere since escape of blowby gases is reduced. Also, the proposed piston can increase engine durability and efficiency as there is reduction in emission to the atmosphere since escape of blowby gases is reduced.As illustrated in FIG. 2, the blowby gases in case of the proposed piston ‘optimized blowby’ is much reduced as compare to the existing piston ‘existing blowby’.
[0040] The proposed disclosure a piston with compression ring, which is capable of reducing the blowby gases inside the cylinder. The proposed piston includes a compression ring, which reduces the emission to the atmosphere since escape of blowby gases is reduced. Also, increase engine durability and efficiency as there is reduction in emission to the atmosphere since escape of blowby gases is reduced, and the oil consumption is reduced.
[0041] Moreover, in interpreting the specification, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refer to at least one of something selected from the group consisting of A, B, C ….and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.
[0042] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions, or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION
[0043] The proposed invention provides a piston with compression ring, which is capable of reducing the blowby gases inside the cylinder.
[0044] The proposed invention provides a piston with compression ring, which reduces the emission to the atmosphere since escape of blowby gases is reduced.
[0045] The proposed invention provides a piston with compression ring, which increase engine durability and efficiency as there is reduction in emission to the atmosphere since escape of blowby gases is reduced.
, Claims:1. A piston adapted to be used in a diesel engine, the piston comprises:
a plurality of grooves (106) at a circumference of piston;
a plurality of compression rings (108) configured inside the plurality of grooves such that each of the plurality of compression rings (108) is accommodated in at most one groove of the plurality of grooves (106), wherein a first compression ring (108-1) of the plurality of rings (108) is configured in a first groove (106-1) of the plurality of grooves (106), having a corresponding profile with the first compression ring (108-1),wherein a thickness of the first compression ring (108-1) is linearly decreasing from an outer circumference(108-1a) of the first compression ring (108-1) towards an inner circumference (108-1b) of the first compression ring (108-1).
2. The piston as claimed in claim 1, wherein a first angle α1 between a first surface (108-1c), from the outer circumference (108-1a) till the inner circumference (108-1b) of the compression ring (108), and a radial axis (110) of the first compression ring (108-1) is concurrent to a second angle α2 between a second surface (108-1d) opposite to the first surface (108-1c), from the outer circumference (108-1a) till the inner circumference (108-1b) of the first compression ring (108-1), and a radial axis (110) of the first compression ring (108-1).
3. The piston as claimed in claim 2, wherein the first surface (108-1c) and the second surface (108-1d) are flat surfaces.
4. The piston as claimed in claim 2, wherein a sum of the first angle α1and the second angle α2 is within a range of 3.0 - 18.0 degrees.
5. A diesel engine comprising:
a cylinder having a cavity;
a piston slidably configured inside the cavity, the piston comprising:
a plurality of grooves (106) at a circumference of piston, and
a plurality of compression rings (108) configured inside the plurality of grooves (106) such that each of the plurality of compression rings (108) is accommodated in at most one groove of the plurality of grooves (106), wherein a first compression ring (108-1) of the plurality of rings (108) is configured in a first groove (106-1), of the plurality of grooves (106), having a corresponding profile with the first compression ring (108-1), wherein a thickness of the first compression ring (108-1) is linearly decreasing from an outer circumference (108-1a) of the first compression ring (108-1) towards an inner circumference (108-1b) of the first compression ring (108-1).
6. The diesel engine as claimed in claim 5, wherein a first angle α1 between a first surface (108-1c), from the outer circumference (108-1a) till the inner circumference (108-1b) of the compression ring (108-1), and a radial axis (110) of the first compression ring (108-1) is concurrent to a second angle α2 between a second surface (108-1d) opposite to the first surface (108-1c), from the outer circumference (108-1a) till the inner circumference (108-1b) of the compression ring (108-1), and the radial axis (110) of the first compression ring (108-1).
7. The diesel engine as claimed in claim 5, wherein the first surface (108-1c) and the second surface (108-1d) are flat surface.
8. The diesel engine as claimed in claim 5, wherein a sum of the first angle α1and the second angle α1is within a range of 3.0 - 18.0 degrees.