US 4,760,821 AGranted

Intake spiral device and/or turbulence device for combustion engines

AssigneeMotoren-Werke Mannheim AG vorm. Benz Abt. stat. Motorenbau.

InventorsHans Aupor, Wilhelm Muller

Life of this patent

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Abstract

At least one inlet channel (4) for each cylinder is developed as a filler channel in which there is a flap valve (13) turning on an axis (12). During full load operation, the flap valve (13) is in a rest position, which does not influence the flow through the inlet channel (4). During partial load operation, however, the flap valve (13) is in a working position, in which it shapes the flow in the inlet channel so unsymmetrically that at the mouth (6) of the inlet channel (4) leading into the cylinder (1) the compressed air flowing out in large quantities has a tendency toward spiral and/or turbulence-reinforcing directions. In this way, fuel preparation is improved during the partial load operation of the motor, leading to combustion with low smoke and noxious substance levels and low consumption.

An intake spiral and/or turbulence device for a fuel combustion engine with fuel injection and with a cylinder which is provided with at least one inlet channel and with a cylinder head which has a combustion chamber, said device comprising:

a first intake channel which is formed as a spiral channel through which charge air can flow into said chamber, said first intake channel having a first end and a second end, with said first end being provided with a mouth which is disposed around a first inlet valve and which is closable in said combustion chamber in said cylinder head by a first valve disk which is disposed on a portion of said first inlet valve which extends into said cylinder, and
a second intake channel which is formed as a filling channel through which charge air can flow into said chamber, said second intake channel having a first end and a second end, with said first end being provided with a mouth which is disposed around a second inlet valve and which is closable in said combustion chamber in said cylinder head by a second valve disk which is disposed on a portion of said second inlet valve which extends into said cylinder, and with said second intake channel further being provided with an adjustable flow control part which is arranged in its second end, said flow control part being controlled as a function of at least one engine parameter, further, with said flow control part being in a rest position during a fully loaded performance of said engine and in a working position during a partially loaded operation of said engine, wherein said flow control part has no effect on the flow of charge air through said second intake channel while said flow control part is in said rest position, and wherein said flow control part, while in its working positions, adjusts to at least partially close said second intake channel and to deflect the charge air flow from said second valve disk in such a way that the intake spiral and turbulence of said device is strengthened.

Facts

Application

07/003,382Filed 5 Nov 1986

Priority

DE 35077675 Mar 1985

Granted

2 Aug 1988

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

F02B 31/06
By means within the induction channel, e.g. deflectors: movable means, e.g. butterfly valves
F02B 31/042
By means within the induction channel, e.g. deflectors: induction channel having a helical shape around the intake valve axis
F02B 31/085
Having multiple air inlets: having two inlet valves
F02F 1/4214
Shape or arrangement of intake or exhaust channels in cylinder heads: specially adapted for four or more valves per cylinder

Abstract

Claims10