FORM 2
THE PATENTS ACT 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
PROVISIONAL SPECIFICATION
(See Section 10; rule 13)
TITLE OF THE INVENTION
A novel integrated module for Inlet manifold, valve cover, exhaust gas re circulation, blow by oil separation with provision of oil filling for twin cylinder internal combustion inline common rail diesel engine
APPLICANTS
TATA MOTORS LIMITED, an Indian company
having its registered office at Bombay House,
24 Homi Mody Street, Hutatma Chowk,
Mumbai 400 001 Maharashtra, India
INVENTORS
Mr. Milind D. Peshave, Mr.Niraj R. Dharkar Indian nationals
of TATA MOTORS LIMITED,
an Indian company having its registered office
at Bombay House, 24 Homi Mody Street, Hutatma Chowk,
Mumbai 400 001 Maharashtra, India
PREAMBLE TO THE DESCRIPTION
The following specification describes the invention
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FIELD OF INVENTION:
This invention relates to internal combustion engine and more particularly relates to an integration of inlet manifold, valve cover, exhaust gas re circulation, blow by oil separation with provision of oil filling for twin cylinder internal combustion inline common rail diesel engine.
BACKGROUND OF THE INVENTION:
Conventionally inlet manifold, valve cover, oil separation from blowby etc. are provided separately to carryout respective functions.
US4318372 relates to intake manifold for internal combustion engine, especially diesel engines, having plurality of cylinder air swirl developing inlet ports. In its more particular aspects, the invention relates to side feed log type engine intake manifold with internal flow directing means for balancing the inlet conditions for air flow to the associated engine cylinder inlet ports. In brief this prior art preaches us the uniform air flow condition for individual cylinder in the mulyti cylinder engine.
OBJECT OF THE INVENTION:
The main object of the present invention is to provide a cylinder head valve cover integrated with inlet manifold for twin cylinder internal combustion inline common rail diesel engine.
Yet another object of this invention is to recalculate the exhaust gas in the inlet manifold
Yet another object of this invention is to allow the blow by gases to be circulated in the module only at required pressure
Yet another object of this invention is to ensure oil separation from blow by gases.
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Figure 3: Isometric view from the top for integrated module Figures 4 & 5 shows sectional side views of the integrated module
The integrated module (A) has got two main chambers inlet manifold (1) and valve cover (2). Internal curvature (3) of the inlet manifold (1) ensures smooth air flow with uniform distribution of mixture of fresh air and exhaust gases to individual twin inlet ports provided in the cylinders head. The twin openings (4) of inlet manifold are aligned and mounted with corresponding twin ports of cylinder head. Opening of suitable size (5) is provided for circulation exhaust gases to the inlet manifold. Separate opening (6) is' made for entry of blow by gases, which get circulated in the chamber module when valve located in the head (7) at the entry opens at required pressure. After entry of blow by gases, oil carried with blow by gases gets separated in the chamber due to restrictions provided in baffle (8). Oil gets collected in the baffle plate of cylinder head, while gases without oil contents goes back in the charging system through a port (9) provided above the entry port.
Suitable opening (10) at the appropriate location is provided in the module for filling the oil to the engine. Sealing profile (11) in the module with suitable mounting provision (12) with bolts (13) ensures leak proof sealing between blow by gases and pressurized air with no escape of pressurized air and blow by gases to atmosphere.
Innovation lies in carrying out multiple functions with simple common modular assembly.
The integrated module in accordance with this invention manages the smooth & uniform air flow to two inline cylinders, exhaust gas re circulation to inlet manifold, oil separation from blow by gases, allows the blow by gases to be circulated at required pressure and separate the oil content from blow by gases
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Yet another object is to ensure the effective sealing of air and gases. Yet another object is to provide the provision for oil filling to the engine.
SUMMARY OF INVENTION:
The integrated module is provided with inlet manifold whose internal curvature ensures smooth air flow with uniform distribution of mixture of fresh air and exhaust gases to individual twin inlet ports provided in the cylinders head. The twin openings of inlet manifold are aligned and mounted with corresponding twin ports of cylinder head. Opening of suitable size is provided for circulation exhaust gases to the inlet manifold. Separate opening is made for entry of blow by gases which get circulated in the chamber module when valve located in the head at the entry opens at required pressure. After entry of blow by gases, oil carried with blow by gases gets separated in the chamber due to restrictions provided in baffle. Oil gets collected in the baffle plate of cylinder head, while gases without oil contents goes back in the charging system through a port provided above the entry port.
Suitable opening at the appropriate location is provided in the module for filling the oil to the engine. Sealing profile in the module with suitable mounting with bolts ensures leak proof sealing between blow by gases and pressurized air with no escape of pressurized air and blow by gases to atmosphere.
Innovation lies in carrying out multiple functions with simple common modular assembly.
DESCRIPTION OF PREFFERED EMBODIMENTS:
Referring now to the drawings wherein the showings are for the purpose of
illustrating a preferred embodiment of the invention only, and not for the
purpose of limiting the same,
Fig 1: Bottom view of integrated module
Figure 2: Isometric view from the bottom for integrated module

with provision for filling of oil to the engine and ensures the effective sealing of air and gases.
This invention integrates the multifunction in the single module and ensures the compactness of an engine which is a crucial requirement of small engine for automotive application.
The foregoing description is a specific embodiment of the present invention. It should be appreciated that this embodiment is described for purpose of illustration only, and that numerous alterations and modifications may be practiced by those skilled in the art without departing from the spirit and scope of the invention. It is intended that all such modifications and alterations be included insofar as they come within the scope of the invention as claimed or the equivalents thereof.
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