US 2003/0192491 A1 · Almost zero combustion chamber

Abstract

Efficiency almost doubles as the normally lost combustion chamber volume in an internal combustion engine, which does no work, is utilized to produce work. An internal combustion engine of positive displacement type with little fixed combustion chamber volume. A secondary cam actuates a secondary piston through a secondary cam follower. The secondary cam is driven by a timed means of gear or chain or belt from the rotation of the crankshaft. An interconnecting passage forms a gaseous communication between the primary and secondary piston. The secondary piston activated by the secondary cam stores fresh gasses in the compression cycle. The secondary piston then returns the gasses to be combusted to the volume on top of and provided by the primary piston in the power stroke. At the proper compression ratio the mixture is ignited.

Drawings

Drawings are temporarily unavailable. Open the PDF at USPTO

Drawings

Claims3

Dependent claims

An internal combustion engine means comprising;

A primary cylindrical cylinder bore means;
A primary cylindrical piston means reciprocating disposed in said cylinder bore having a flat top surface;
A flat head surface attached said primary cylinder in close relation forming a very small volumetric fixed combustion chamber means;
Intake and exhaust valves with communication passages mounted in said flat head in gaseous product variable control means;
A novel secondary cylindrical cylinder bore affixed in close relationship with the said primary cylindrical cylinder bore;
A novel secondary flat top piston means disposed in the said secondary cylinder bore means;
A novel secondary cam means;
A novel cam follower means conjoining said secondary cam motion profile unison said secondary flat top piston;
A novel gaseous communication port means;
Connecting said primary piston gaseous variables reciprocal betwixt gaseous convey communication said novel secondary piston promoting gaseous swirl therefore.

7 more elements

Dependencies are inferred from the claim text.

Description1,014 words

Summary239 words

#This invention relates to internal combustion engines.

#Internal combustion engines use fixed volume combustion chambers used to control the compression ratio.

#The volume found in a conventional combustion chamber is a wasted volume, because no work is accomplished in that volume.

Brief description of the drawings3 figures

#FIG. 1

#Shows a cut through the middle of an internal combustion engine during the power stroke. The main power piston is traveling downward. The crankshaft is rotating clockwise. The secondary camshaft is rotating counterclockwise.

#The secondary cam is of desmodromic style. Twin cam surfaces are in close contact with the cam follower. The cam follower is in the form of rollers with center shafts. The center shafts are solidly affixed into the piston skirt (shown in FIG. 1-B, left view). Two rollers and center shafts match the twin grooves in the front and backside (not shown) of the cam

Detailed description459 words

#1—engine block

#2—head

#3—interconnecting passage between the power piston and secondary piston

Facts

Application

10/120,312Filed 10 Apr 2002

Published

16 Oct 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

F02B 75/02
Other engines: engines characterised by their cycles, e.g. six-stroke
F02B 41/06
Engines with prolonged expansion: in compound cylinders
Y02T 10/12
Internal combustion engine [ICE] based vehicles: improving ICE efficiencies
F02B
Internal-combustion piston engines

Almost zero combustion chamber

Life of this patent

Almost zero combustion chamber

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims3

Description1,014 words

Drawings

Classification5 codes

Life of this patent

Description1,014 words