The Cam-EngineThe Cam-EnginePresentation byPresentation by

Thierry DejaegereThierry Dejaegere

Lomolenstraat 2Lomolenstraat 2

9880 Lotenhulle(Aalter)9880 Lotenhulle(Aalter)

BelgiumBelgium

thierry.dejaegere@thierry.dejaegere@thinnovthinnov.be.be

The Cam-EngineThe Cam-Engine

ContentContent

•PresentationPresentation•WhatWhat•WhyWhy•How it worksHow it works•DesignDesign•SummarySummary

PresentationPresentation

To improve combustion engines a lot of To improve combustion engines a lot of possibillitys are already used. That’s why I possibillitys are already used. That’s why I searched for something completely different. I searched for something completely different. I came to the idea that when I used a cam I could came to the idea that when I used a cam I could have the up and down movement of the piston have the up and down movement of the piston more than once for one revolution of the main more than once for one revolution of the main axle. The cam can also be given a certain shape axle. The cam can also be given a certain shape so the speed of the pistons can be different for so the speed of the pistons can be different for each stroke, the strokes can have a different each stroke, the strokes can have a different distance or when the engine is running constantly distance or when the engine is running constantly each stroke could have a different time to each stroke could have a different time to complete. To make this possible I also introduced complete. To make this possible I also introduced the electromagnetic driven valve.the electromagnetic driven valve.

What ?What ?

This engine is based on the 4-stroke principle. This engine is based on the 4-stroke principle. The main axle is a cylindrical axle on which the The main axle is a cylindrical axle on which the “2” cams are mounted. These cams let the “2” cams are mounted. These cams let the pistons move. Another new thing is that the pistons move. Another new thing is that the cylindrical axle can have a whole in the centre cylindrical axle can have a whole in the centre through which driving axles or other motor parts through which driving axles or other motor parts can be put. As already mentioned, the valves are can be put. As already mentioned, the valves are no longer driven by a camshaft but by no longer driven by a camshaft but by electromagnets. This in order to make the electromagnets. This in order to make the engine less complicated and lighter. It also gives engine less complicated and lighter. It also gives us the possibility to let the intake air flow around us the possibility to let the intake air flow around the intake valve, to control the moment of the intake valve, to control the moment of opening-closing and the opening-gap of the opening-closing and the opening-gap of the valve.valve.

Why ?Why ?

This engine has some big advantages. For an This engine has some big advantages. For an extreme light engine it gives an enormous power extreme light engine it gives an enormous power output. It has also the capability to keep the output. It has also the capability to keep the complete driving unit of a vehicle very compact. complete driving unit of a vehicle very compact. It is also very simple to change the engine. By It is also very simple to change the engine. By putting several engines together you create an putting several engines together you create an unbelievable power machine. When the Cam is unbelievable power machine. When the Cam is given a certain shape each stroke is given its given a certain shape each stroke is given its own characteristics. The following is of some own characteristics. The following is of some importance for a good engine: the time for every importance for a good engine: the time for every stroke, the piston speed and the length of each stroke, the piston speed and the length of each stroke. These three things can be different even stroke. These three things can be different even at a constant rotation speed.at a constant rotation speed.

How it worksHow it worksIn the next pictures you will see the engine cut In the next pictures you will see the engine cut into peaces so it is possible to show what into peaces so it is possible to show what happens inside the engine.happens inside the engine.

Here You see a part of the engine with the Here You see a part of the engine with the different parts (originally a 4-cylinder in different parts (originally a 4-cylinder in starform)starform)

The intake stroke :

On the previous pictures you saw the intake On the previous pictures you saw the intake stroke.stroke.

As you could see the cam turns left and pulls, As you could see the cam turns left and pulls, by means of the cam and the pistonpen, the by means of the cam and the pistonpen, the piston downwards.piston downwards.

On the pistonpen there are mounted three On the pistonpen there are mounted three needlebearings. Two that fit in the two cams needlebearings. Two that fit in the two cams and one that is catched between the and one that is catched between the bearingplates. These bearingplates, mounted bearingplates. These bearingplates, mounted on the central body of the engineblock, have on the central body of the engineblock, have the purpose to hold the pushrod in the center the purpose to hold the pushrod in the center of the cylinder and to avoid that the piston of the cylinder and to avoid that the piston turns. The next strokes happen in the same turns. The next strokes happen in the same way.way.

As said before, the cameshape gives every As said before, the cameshape gives every stroke its own characteristics and stroke its own characteristics and performance.performance.

Design :Design :

The design is a The design is a variation on the variation on the Wankle-principle. In Wankle-principle. In that engine you had that engine you had some serious pro’s some serious pro’s and contra’s. Here I and contra’s. Here I tried to change the tried to change the contra’s in pro’s.contra’s in pro’s.

SummarySummary : :

To let this engine turn To let this engine turn well I had to ad an well I had to ad an extra. This extra is extra. This extra is the electormagnetic the electormagnetic controlled valve. In controlled valve. In the following figure the following figure you will find the you will find the complete valve complete valve design.design.

The Electromagnetic controlled The Electromagnetic controlled valve :valve :

This engine is probably the most powerfull This engine is probably the most powerfull that can be made. For it’s weight it that can be made. For it’s weight it

produces an enormous amount of power. produces an enormous amount of power. It also gives us the opportunity to It also gives us the opportunity to

construct different kind of engines. One construct different kind of engines. One can use only one cylinder or more.can use only one cylinder or more.