DE3016394A1 - Spark ignition IC engine - has centrifugally governed damper in inlet to maintain efficiency over range of speeds - Google Patents

Abstract

The engine has cylinders arranged in line with a suction manifold supplied from a carburetter (4) with a throttle (3). A damper housing (2) with a sliding blade (1) is placed between the carburetter and the manifold. The operating rod (6) of the blade is connected to a centrifugal governor (5). The engine inlet is thus regulated according to speed and this maintains the volumetric efficiency and thus the compression ratio. The efficiency is thereby maintained over the entire range of engine speed and the engine can be designed with a higher compression ratio. A manual control (10) on the governor adjusts it for stopping and starting. Specification printed 25.3.82.

Description

Principle scheme of the linear regulator.

1 / The regulating element (slide) can also have other shapes: radial, etc.

1a / Regulating opening (precisely profiled in the laboratory, coordinated with the engine running under operating conditions.)

2 / regulating element housing (airtight)

3 / Carburetor regulating flap.

4 / diffuser

5 / speed regulator (complete).

6 / connecting rod (slide 1 and speed regulator 5).

6a / adjustment screw (for fine adjustment ratio 1 and 5).

6b / manual shift element (enables: start, idle, stop).

7 / centrifugal regulator (could be replaced by: hydraulic, pneumatic, magnetic, electronic speed regulator)

8 / Barometric box (Compensates for atmospheric pressure fluctuations, high, low and high. With simpler regulators, there is no need to install).

9 / Ignition switch contact (switches ignition "off" after full combustion mix pere).

10 / manual pull: start, idle, stop.

10a / Position: "Stop"

10b / Location: "Start"

11 / regulator drive

engine

Suction line

Instructions:

To produce the regulating opening 1a.

Motor with regulator ready for operation.

Hold high temperatures.

Set the idle speed with the 6a adjustment screw to a 800.

Fully open the carburetor regulating flap 3.

Maintain and adjust engine speeds with electric braking device.

Slowly drive through the entire speed range.

Spread point according to point 1a (regulating opening) until the engine knocks slightly when driving through the entire speed range. Possible at different speeds.

This establishes the regulation opening for the motor type profile of 1a. Idle speeds from 800 to 600 rpm. switch with 6a.

Repeatedly drive through the entire speed range to the maximum and back and the engine must not have any knocking signs.

The engine is now set and ready for operation.

Barometric can:

Their size and influence must be calculated theoretically and tried out in practice.

General justification of the new construction

OTTO engine with linearly regulated cylinder charge.

Previous OTTO engines are not working economically enough, especially in higher speed ranges. With increasing speeds, the valve opening time is shortened, full filling of cylinders is not possible and sinks to 40%. This also reduces the maximum compression pressure, lower working pressure on the piston and thus economy and efficiency. Shown in Appendix 2, Diagram 1 / Current OTTO Engines /.

To improve it, designers have used premium fuel with the addition of tetraethyl lead. (dangerous environmental pollution).

Compressors have also been used to fill cylinders in higher speed ranges under higher pressure (up to 2.8 bar).

Compressor OTTO engines are uneconomical because of their high exhaust pressure, where energy is lost. In some cases, this energy has tried to be exploited by exhaust gas turbines, but even so, compressor motors have remained uneconomical.

High fuel consumption at higher speeds is often justified by the higher aerodynamic drag of the car body, but that too is more of an excuse.

The main reason for increasing fuel consumption at higher speeds is mainly responsible for the decreasing actual compression pressure efficiency and thus also economy.

Patent solution:

Highly compressed OTTO engines with linearly regulated cylinder charge.

With which everything that is about ideal cylinder filling is regulated away according to Diagram A to C with a linear regulator.

Its regulating slide 1 profiled in the test laboratory with opening 1a in connection with the speed regulator enables linear filling according to diagrams A, B, C.

Switch off by means of a combustion mixture lock and then switch off the ignition.

Fuel: regular gasoline, other fuels or their mixtures.

Versions: A 1 - 0.8 bar compression a 1: 12

B 0.8 - 0.6 bar compression a 1: 16

C 0.6-0.4 bar - "- a 1:20

According to added diagrams.

Advantages: Greater economy and efficiency.

Lower fuel consumption by 20-30%

Regular fuel.

Higher KW power by a 20% and higher torque.

Lower environmental impact.

Lower pressure in the exhaust and therefore quieter.

Disadvantages: Reduced pulling force in the low speed range according to design: A, B, C.

Additional production costs of 500 DM.

Function description

of the linear regulator for OTTO engines with linearly regulated cylinder charge.

1 / start (cranking)

Carburetor regulating flap 3 open in position "idle" or more. Slide 1 with the aid of the hand pull 10 in the "Start" position 10b.

Switch on the ignition with the ignition key and start it like any conventional OTTO engine; the carburetor acceleration pump can also help.

2 / idle

After starting the engine, idling can be set as required with the hand pull 10 in position 10b, depending on the engine temperature. Even with a cold engine, you can drive immediately.

3 / operation

After reaching the correct engine temperature, move the pull 10 to the starting position. The engine can be driven in the same way as with a conventional design, with the carburetor regulating flap 3 regulating the required power and slide 1 with its profiled opening 1a controls that the compression pressure does not reach the auto-ignition values (detonation, knocking) even with fully open flap 3 and current speeds.

Regulated OTTO engine will have reduced tractive power in the low speed range and again have higher power than conventional engines at higher speeds. The linearly regulated motor will be 20 to 30% more economical in consumption. Linear regulated engines will not need super fuel and will be more environmentally friendly.

4 / Stop (switch off)

Engine turns idle speed, carburetor flap 3 in idle position, control slide in idle position.

With manual pull 10 in position 10a, we move slide 1 to the "Stop" position and thus completely block the supply of combustion mixture. At the same time, contact 9 switches off the ignition system. The engine stops.

Claims (1)

1 / As a set: Overcompressed OTTO engine (1: 12,1: 16,1: 20) with carburettor or injection in which combustion cylinders are linearly (evenly percentage) filled with combustion mixture in part or in the whole speed range, with the help of the linear regulator, which by its profile rivets regulating element 1 and 1a in connection with speed control. 5 (different types: watt / centrifugal control / hydraulic, pneumatic, magnetic, electronic speed control) is built into the suction line, and regulates according to Diagran A, B, C in ranges below 1 bar so that there is no knocking in the entire engine speed range (self-ignition , Detonation) Starting the engine “start”, setting idle and switching off “stop” is made possible by the hand pull 10. Barometric (vacuum) jar enables compensation of atmospheric pressure fluctuations. The linear regulator does not have to be installed as it is shown in principle, it can also be installed in front of or in the injection measuring regulator, or replace the regulating flap of the carburetor. 2 / detail: Linear regulator, regulating element 1 with regulating profile 1a in linear form as shown in the schematic diagram, or in radial form as regulating disc, in which regulating profile 1a is incorporated, or in another form which fulfills the indicated regulating function.