This invention relates to a device for the utilisation ofexhaust gas energy of an IC engine including that of an automobile engine, for the purpose of harnessing such energy, which would otherwise be wasted by the discharge of exhaust gases into the atmosphere.
Presently, a substantial portion of the total energy supplied to an IC engine is wasted through the exhaust.
It is therefore an object of this invention to propose a device which utilises this energy'.
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Another object of this invention is to propose a device as aforesaid which needs very little alteration in the automobile engine structure. Such alteration can be carried out during manufacture without encountering any problems on the assembly line.
Yet another object of this invention is to propose a device as aforesaid which involves a marginal

increase in cost of the engine. In any event, the increase in cost is more than compensated by the saving in fuel resulting from utilisation of exhaust gas energy.
Other features of this invention will be apparent from the further description thereof given hereunder..
The device for the utilisation of exhaust gas energy of an IC engine, according to this invention, comprises a gas turbine provided for the said engine, the turbine being enabled, with the engine running, to rotate under the thrust of exhaust gases of the engine impinging on the turbine vanes; the said turbine being coupled to the engine shaft through a one way clutch, such that the said turbine assists the engine by transmitting power thereto, while running, whenever the turbine speed is greater than the engine speed.
This invention will now be described with reference to the accompanying drawings the single Figure in which illustrates, by way of example, and not by way of

limitation, one of possible embodiments of this invention.
A gas turbine T is provided for the automobile engine E, When the engine is running with exhaust gases emerging from the exhaust pipe P, the turbine is enabled to rotate under the thrust of the exhaust gases impinging on the vanes of the turbine.
The engine shaft Q of the engine is coupled to the through a oneway clutch D, said turbine thus transmitting power to the engine, while running to assist the engine whenever the speed of the turbine exceeds the engine speed.

The inlet of the turbine is, preferably located adjacent, and in close proximity, to the outlet of the

exhaust pipe of the engine. The closer the outlet of the exhaust pipe to the inlet of the turbine, the greater the thrust available to thr turbine, by avoiding transmission losses that may be incurred in the travel.

of the said gases to the inlet of the turbine. As a matter of fact, the exhaust pipe is preferably made to have a minimum length with this purpose in view.
It will be appreciated that various other embodiments of this invention are possible without departing from the scope and ambit of this invention.

We Claim:
1. A device for the utilisation of exhaust gas energy of
an IC engine comprising a gas turbine provided for
the said engine, the turbine being enabled, with the
engine running, to rotate under the thrust of exhaust
gases of the engine impinging on the turbine vanes;
the said turbine being coupled to the engine shaft
through a one way clutch, such that the said turbine
assists the engine by transmitting power thereto, while
running, whenever the turbine speed is greater than the
engine speed.
3. A device as claimed in Claim 1 wherein the inlet of the turbine is located adjacent, and in close proximity, to the outlet of the exhaust pipe of the
engine. 4. A device as claimed in Claim 1 or Claim 3
wherein the exhaust pipe is of minimum possible
length.. 5. A device for the utilisation of exhaust gas energy
of an IC engine substantially as herein described