FORM 2
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See Section 10; rule 13)
TITLE OF THE INVENTION Rear end structure of a vehicle with rear engine configuration
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
Vijay Pachore, Pratap Daphal, Mandar Hajare
Yuvraj Patil, Ahmed Soheb
All are 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 particularly describes the invention and the manner in which it is to be performed.
FIELD OF INVENTION

This invention relates to the rear structure for a vehicle provided with engine at the rear end for increased safety.
BACKGROUND OF INVENTION
The vehicles, particularly the passenger cars, are provided with engine at the front end. However there are few vehicles which are provided with the engines at the rear end which are also known as rear engine vehicles.
The rear engines vehicles have a potential risk due to impact of the engine in the event of rear end crashes. Crash on rear end can create fire hazards, and can undermine the safety. In the case of cars, the engine location is very low at its rear end. In the event of rear impacts by other vehicles, the engine & its peripherals vulnerable for damages which may lead to fire hazards causing irreparable damage.
OBJECTS OF THE INVENTION
The main objective of the present invention is to obviate above mentioned drawbacks by providing a rear structure for a vehicle provided with engine at the rear end.
Another object of the present disclosure is to provide a structural enclosure for engine of a rear engine vehicle to protect it in the event of rear end crashes.
Another objective of the present disclosure is to provide a structural envelope for engine of a rear engine vehicle to protect it in the event of rear end which is simple in construction and cost effective.
STATEMENT AND SUMMARY OF THE INVENTION

A Rear structure for a vehicle provided with engine at rear end comprising: an engine mounted on subframe side members and second tie member, suspension trailing arms are pivoted on said subframe side members, first tie member is provided to connect said trailing arms on right and left side of said vehicle, structural enclosure formed by said subframe side members, said suspension trailing arms, said tie members, rear cross member acts as engine protective cage.
The suspension trailing arms and said first tie member are configured in such a way that they can provide protection to said engine from side as well and as from rear end. The subframe side members are provided with said second tie member and said rear cross member so as to create a closed structure. Rear bumper member is replacebly, rigidly coupled with said subframe side member. Said rear bumper member is designed so as to deform and absorb the impact energy. The suspension trailing arms and said subframe side members are connected to said long members at one location. The suspension trailing arms and said subframe side members have shapes parallel to the longitudinal axis of said vehicle.
BRIEF DESCRIPTION OF DRAWINGS
The novel features and characteristic of the disclosure are set forth in the appended claims. The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:
Figure - 01 shows side view of a car provided with rear engine,
Figure - 02 shows an exploded view of the rear end structure of a car which in
accordance with the invention,

Figure - 03 shows bottom view of the rear end structure of a car in accordance with the invention.
DETAILED DESCRIPTION
The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the detailed description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which form the subject of the claims of the disclosure. It should be appreciated by those skilled in the art that the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the disclosure as set forth in the appended claims. The novel features which are believed to be characteristic of the disclosure, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.
To overcome the drawbacks mentioned in the background a system for conducting durability test on bearing is disclosed. The system simulates the actual working condition of the bearing, hence better results of durability is obtained from the system.
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.

Figure 01 shows side view of a car (1) provided with rear engine (2) at specified location.
Figure 02 shows isometric exploded view of the rear structure of said car. It shows said engine (2), long members (3) parallelly provided to each other on both sides of said engine, subframe side members (5) parallelly provided to each other on both sides of said engine in such a way that said long members are placed vertically above said subframe side members. Said subframe side members are provided above suspension trailing arms (4) and both are detachably attached to a second tie member (8) which further connects both said subframe side members on front side. Said subframe side members are connected to each other from rear side by rear cross members (9). Rear bumper (6) is connected to subframe side member. First tie member (7) is provided to connect said suspension trailing arms, second tie member (8) for connecting the said subframe side members and rear cross member (9).
Figure 03 shows the bottom view of the rear structure of the car with rear engine. The engine is mounted on said subframe side members & said second tie member. The engine has additionally been protected from side by use of suspension trailing arm. The trailing arms are pivoted on said subframe side members. The first tie member is provided to connect said trailing arms on right & left side of the vehicle. Besides providing support to the rear suspension, said trailing arms & said first tie member are configured to provide protection to said engine from side as well and as from the rear end.
The subframe side members are provided with said second tie member and said rear cross member which creates a closed structure to improve the strength and robustness of said rear end structure.
The rear bumper member is bolted with said subframe side member. The rear bumper member is provided for stopping any objects hitting from the rear end of the vehicle. In rear impact at slower speeds, said rear bumper member is designed to deform and absorb the impact energy controlling the shock level generated to the

structure located ahead. The rear bumper is boltable to said subframe side member so that the same can be replaced when deformed due to a slower speed rear impact.
In the case of impact of the rear end of the vehicle with high speeds, typically by another vehicle with same weight, the rear structure is required to maintain its rigidity & protect the space around the engine. For this purpose said suspension trailing arms & said subframe side members are connected to said long members at one location. Also said suspension trailing arms & said subframe side members have shapes parallel to the longitudinal axis of the vehicle so that they are not vulnerable for deformations under longitudinal rear impact forces along the longitudinal directions.
The structural enclosure formed by said subframe side members, said suspension trailing arms, said tie members, said rear cross member can be termed as engine protective cage as they maintain adequate space around the engine to prevent fire hazards in the case of rear impact.
Equivalents
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.
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."

While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

WE CLAIM
1. A Rear structure for a vehicle provided with engine at rear end comprising:
- an engine mounted on subframe side members and second tie member,
- suspension trailing arms are pivoted on said subframe side members,
- first tie member is provided to connect said trailing arms on right and left side of said vehicle,
- structural enclosure formed by said subframe side members, said suspension trailing arms, said tie members, rear cross member acts as engine protective cage.

2. The system as claimed in claim 1 wherein, said suspension trailing arms and said first tie member are configured in such a way that they can provide protection to said engine from side as well and as from rear end.
3. The system as claimed in claim 1 wherein, said subframe side members are provided with said second tie member and said rear cross member so as to create a closed structure.
4. The system as claimed in claim 1 wherein, rear bumper member is replacebly, rigidly coupled with said subframe side member.
5. The system as claimed in claim 1 wherein, said rear bumper member is designed so as to deform and absorb the impact energy.
6. The system as claimed in claim 1 wherein, said suspension trailing arms and said subframe side members are connected to said long members at one location.
7. The system as claimed in claim 1 wherein, said suspension trailing arms and said subframe side members have shapes parallel to the longitudinal axis of said vehicle.

8. The Rear structure for a vehicle provided with engine at rear end substantially as herein described in the description as illustrated with reference to the accompanying drawings.