24/06/2005 - Controller General of Patents, Designs, and Trade Marks

(21) Application No.832/DEL/1998 A (22) Date of filing of Application: 31/03/1998
(54) Title of the invention: “AN AIR ASSIST DEVICE FOR AN INTERNAL
COMBUSTION ENGINE”.
(51) International Classification 7 :
F02B 29/00
(30) Priority Data:
(31) Document No.:
(32) Date :
(33) Name of convention country :
(66) Filed U/s 5(2) : NIL
(61) Patent of addition to application
No. : NA
(62) Filed on : NA
(63) Divisional to Application No.
:NIL
(64) Filed on : NA
(57) Abstract:
(71) Name of the applicant:
DEPARTMENT OF SCIENCE & TECHNOLOGY,
Address of the Applicant:
Technology Bhavan, New Mehrauli Rod, New Delhi
110016, Indian.
(72) Name of the Inventor:
MELKOTE VIRARAGHAVACHAR
NARASHIMAN
An air assist device for an internal combustion engine comprising:
an air pump assembly having a cylindrical block;
a hollow static core of conical configuration provided in the said cylindrical block;
a piston body conforming to the said conical configuration of the static core to enable
vertical movement of the said piston within the said static core having an outlet pot said
piston being provided with piston rings, characterized in that;
an ambient inlet port is provided within the said cylindrical block and a transfer port for
communicating with the engine cylinder provided within the said air pump assembly;
and
crank and crank case connected within the air pump assembly by a connecting rod;
wherein the said piston assembly and static core are conical in configuration having a
cavity depth and tapered configuration proportional to the desired pump stroke of the
engine.
18093