DE10007835A1 - Cylinder head for four-stroke engine has rotary disc inlet-outlet controler - Google Patents

Abstract

The cylinder head has a rotary disc (1) for inlet (3) and outlet (4) control. The use of the rotary disc enables the inlet valves, the outlet valves, the valve springs, the camshafts and the rods to be eliminated. The considerable reduction in the number of components reduces friction and production costs and increases efficiency.

Description

The basic idea of rotary valve control (hereinafter called DSS) is unnecessary loss of performance through actuation of the inlet and outlet springs and the generation of vibrations due to imbalance avoid and thus increase and optimize the effectiveness of the control unit of the 4-stroke engine, as well as significantly reduce components and improve economy and performance.

By using the rotary valve on both sides, the speed is quartered in the cylinder head and thus significantly reduces friction.

Since 4-cylinder variants are mostly used today, the illustration is only to simplify the understanding of a single-cylinder variant with inlet and outlet opening on a rotary valve. Other options such. B. a separate rotary valve for inlet and outlet opposite, would be a further evolution. B. the rotary valve can also be positioned on the side of the cylinder and the openings are in the upper part of the cylinder. However, since the variations refer to the basic principle of the DSS, we restrict ourselves in the patent description to the original variant shown in ( Fig. 1).

By changing the control openings in the eighths (see Fig. 2 and 3), the control times can be changed if necessary, and the change in diameter of the rotary valve also represents a variation in the range of the control times, and the diameter is also directly related to the control opening size Cylinder head (on the combustion chamber side) in connection.

Way of working

For a better understanding it should be noted that a 1/2 turn of the crankshaft is a 1/8 Revolution of the DSS.

For illustration (see Fig. 2-4.4). In the suction phase (see Fig. 4.1), the rotary valve of the DSS is in the second eighth (see Fig. 3) and turns in the course of the downward movement of the piston to bottom dead center into the third eighth and is closed when bottom dead center is reached, so that the piston is closed during the next work step (see Fig. 4.2) of compression. The outlet opening is closed at this point in time because it is in the first eighth before the inlet opening (see Fig. 2).

When the piston reaches top dead center and the mixture ignites, i.e. in the third step, the rotary valve is in the fourth eighth, so (see Fig. 2 and 3). both openings are still closed. When bottom dead center is reached, the rotary valve turns into the fifth eighth (see Fig. 2), so that the outlet opening opens and enables the fourth step in the course of the upward movement of the piston (see Fig. 4.4). Arrived at top dead center, the rotary valve has completely closed the outlet opening and releases the inlet opening again for the intake phase.

Legend to Fig. 1 Cylinder head with rotary valve inlet u. Outlet control

1. Rotary valve
2. Main bearing head side
3rd inlet duct
4th exhaust duct
5. Main bearing face
6. Seal ring seal
7. Drive unit translation

1

/

4

8. Piston

Claims (2)

1. Cylinder head for a 4-stroke Otto engine, which uses a rotary valve for inlet and exhaust control, characterized in that the following components are omitted by using the rotary valve:

• - inlet valves
• - exhaust valves
• - valve springs
• - camshaft
• - pestle

2. Cylinder head according to protection claim 1, characterized in that a considerable reduction in the components to be used is achieved by using the rotary valve ( Fig. 1), with the following objective,

• - Reduction of friction
• - lower production costs
• - increase in efficiency