FIELD OF INVENTION
The present invention generally relates to an air cleaner unit of a scooter and more particularly to a connecting structure mounted over the air cleaner unit of the scoter.
BACKGROUND OF THE INVENTION
Generally, in scooter kind of vehicle an air cleaner is mounted on the engine to supply dirt free clean air to the engine at all operating conditions. The air cleaner is divided in to two chambers namely dirty side and clean side.
In the dirty side, dirty air from atmosphere enters and gets exposed to the filter element, whereas in clean side, the air from dirty side is purified by an intermediate filtering element and clean air is available for combustion. With emission regulation being enforced the harmful gases like gas from positive crankcase ventilation (PCV) chamber and gearbox case should be let out to atmosphere.
During engine operation the combustible mixture gets escaped in the gap between piston ring and cylinder block and gets released through the Positive crankcase ventilation (hereinafter PCV) chamber. These gases are in turn rerouted to the engine through air cleaner. Also in gear case chamber of the engine the gases are generated when the oil in the gearbox gets churned and agitated due to rotation of the gears. These gases are also routed to the engine through air cleaner.

Above mentioned gases generated in PCV chamber and gear box contains some amount of oil, which if gets into the engine with the re¬circulated gases, can be harmful. Thus a proper arrangement of recirculation of said gases and filtration of oil from it should be made in order to keep efficiency of engine unaffected.
SUMMARY OF THE INVENTION
The present invention is related to a connecting structure for an air cleaner of the scooter. This connecting structure has inlets for flowing gases generated inside the engine PCV and gear case.
Mentioned connecting structure has baffle kind structures for filtration of oil from said gases and further redirect filtered gases to the outlet of the connecting structure. Oil filtered from mentioned baffles flows back to the engine PCV through related inlet path for which said inlet path is located at the lowest level of the connecting structure. Said connecting structure is mounted over outer wall of clean side of the air cleaner.
Summary provided above explains the basic features of the invention and does not limit the scope of the invention. Additional detailed information related to the enablement of the invention will be provided in the detailed description and accompanying claims. Scope of the invention shall be based on the claims provided.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
The present invention will become more fully understood from the detailed description given herein below and the accompanying drawing which is incorporated in and constitute embodiments of the invention, illustrate several aspects of the invention and together with a description of the embodiments serve to explain the principles of the invention and thus, are not limited of the present invention and a brief description of the drawing is as follows:
Figure 1 shows the main embodiments of the claimed invention.
Figure 2 and Figure 3 depict the mounting and enabling arrangement of the main embodiments of the claimed invention.
Figure 4 and Figure 5 are describing the enabling arrangement of the essential embodiments of the arrangement.
DETAILED DESCRIPTION OF THE INVENTION
The embodiments disclosed below are not intended to be exhaustive or to limit the invention to the precise forms disclosed in the following detailed description. Rather, the embodiments are chosen and described so that others skilled in the art may utilize their teachings. The invention may have application to all types of vehicles.
Referring to Figure 1, Figure 2 and Figure 3, connecting structure 105 is shown mounting over the air cleaner 100. Said connecting structure 105 has a gear case inlet 104 and an engine PCV inlet 103 facilitating flow

of gases 111a, 11b inside the connecting structure 105. The air cleaner 100 defines a dirty side chamber 106 and a clean side chamber 107 such that the connecting structure 105 is mounting over the clean side chamber 107 of the air cleaner 100.
As shown in Figure 3, an inlet 101 is connected to the dirty side 106 of the air cleaner 100. Non purified air enters the air cleaner 100 through said air inlet 101 on the dirty side. This air comes in contact with the filter element, gets filtered and is transferred to the clean side 107 of the air cleaner 100. Clean air from the clean side 107 of the air filter flows further for the combustion process through the air outlet 102 provided on the clean side 107 of the air cleaner 100.
During engine operation the combustible mixture gets escaped in the gap between piston ring and cylinder block and gets released through the positive crankcase ventilation (hereinafter PCV) chamber. These gases are in turn rerouted to the engine through air cleaner 100 in order to regulate harmful emission in the atmosphere. Also in gear case chamber of the engine the gases are generated when the oil in the gearbox gets churned and agitated due to rotation of the gears. These gases are also routed to the engine through air cleaner 100.
Above mentioned gases generated in PCV chamber and gear box contains some amount of oil, which if gets into the engine with the re¬circulated gases, can be harmful. Thus a proper arrangement of recirculation of said gases and filtration of oil from it should be made in

order to keep efficiency of engine unaffected. In order to filter out said oil mixed with the gases said connecting structure is mounted on the air cleaner 100.
The connecting structure 105 is further connected to the air cleaner 100 through the outlet 108 of the connecting structure 105 such that the gas 111 flows inside the air cleaner 100 and then reaches to the engine through air cleaner outlet 102.
Further referring to Figure 4 and Figure 5, enabling arrangement of the claimed invention is described. Gases 111a and 111b flows inside the connecting structure 105 and comes in contact with the filtration means 109 i.e. baffles and oil 110 gets separated from gases 11a, 11b.
This filtered oil 110 flows downwards in the connecting structure 105 and flows back to the engine PCV from the inlet passage 103 located at the lowermost area of the connecting structure 105.
Filtered gases 111 gets redirected towards the outlet 108 of the connecting structure 105 and from there said filtered air 111 enters the clean side of the air cleaner 100 and flows to the engine through air cleaner outlet 102.
Mentioned invention ensures a better filtration of oil from the gases such that the oil does not get inside the air cleaner 105 and hence maintenance of the air cleaner 105 becomes easier. Further, above described arrangement facilitates the recirculation of filtered oil to the engine PCV and hence said oil does not get wasted.

WHAT IS CLAIMED IS
1) A connecting structure, for an air cleaner of a scooter, comprising:
atleast one inlet into the connecting structure facilitating flow of gases
inside the connecting structure from atleast one gas generation source;
atleast one filtration means configured to separate oil from flowing gases;
and
atleast one outlet of the connecting structure facilitating flow of filtered
gases into the air cleaner;
wherein, the connecting structure is mounted over a outer wall of the air
cleaner and connected with the air cleaner through the outlet;
wherein, the filtration means are redirecting filtered gases into the air
cleaner; and
wherein atleast one inlet facilitates recirculation of air to atleast one gas
generation source.
2) The connecting structure, as claimed in claim 1, wherein the air
cleaner is defining a dirty side chamber and a clean side chamber such
that the connecting structure is mounting over a clean side chamber of the
air cleaner.
3) The connecting structure, as claimed in claim 1, wherein atleast one
inlet of the connecting chamber is located at the lower part of the
connecting structure facilitation recirculation of air to atleast one gas
generating sources.