Internal-combustion engines – Intake manifold – For in-line engine
Patent
1998-02-27
1999-09-14
Kamen, Noah P.
Internal-combustion engines
Intake manifold
For in-line engine
12318421, F02M 3510
Patent
active
059505869
DESCRIPTION:
BRIEF SUMMARY
The air duct system is intended in particular for a motor vehicle. In previously known air duct systems, the various components of the air duct system are secured at various points of the body of the motor vehicle. In one known air duct system, for instance, a gas guide chamber leads from an air inlet opening of the air duct system to an air filter secured for instance to the wheelwell of the motor vehicle body. From the air filter, the gas guide chamber then leads on, for instance to a throttle device with a throttle valve pivotably supported in it. Downstream of the throttle device, the gas guide chamber splits into a plurality of conduits leading to cylinders. The number of conduits is equivalent to the number of cylinders of the engine.
A disadvantage of the known air duct system is that it needs a large amount of space overall in the motor vehicle engine compartment, so that less space is then available for other motor vehicle equipment in the engine compartment. Alternatively, because only a certain amount of installation space is made available to the air duct system, the air duct system or the useful internal volume of the gas guide chamber of the air duct system cannot be made as large as would be needed for optimal functions of the air duct system. Hence compromises must be made, which do not always lead to an outcome that is satisfactory in every respective.
In addition, the known air duct system involves major effort and expense for installation in the engine compartment of the motor vehicle.
ADVANTAGES OF THE INVENTION
The air duct system according to the invention has the advantage over the prior art that while having a large internal useful volume, the air duct system overall requires only little installation space. In the air duct system, the available installation space is advantageously utilized especially well.
Mounting the air duct system on the engine, or its installation in the motor vehicle, is additionally and advantageously especially simple and requires little mounting effort or expense.
By means of the provisions recited herein, advantageous further features of and improvements to the air duct system recited are possible.
If a spirally shaped curved region is located downstream of the interpenetrating region, in terms of the direction of the air flowing through the air duct system, then the available installation space can advantageously be utilized especially.
If the spirally shaped curved region is located upstream of the outlet opening of the air duct system, then an especially favorable guidance of the air is advantageously achieved.
If the interpenetrating region is located downstream of the air inlet opening by a relatively short distance, then still further improvement is obtained in the utilization of the available installation space.
In the course between the air inlet opening and the outlet opening, an air filter may be provided, and the effort and expense and requisite installation space for this air filter are advantageously especially slight.
The region between the interpenetrating region and the spirally shaped curved region is advantageously especially suitable for the provision of the air filter.
In the region between the air inlet opening and the outlet opening of the air duct system, a throttle device can advantageously be provided without major effort or expense.
If the engine has two or more cylinders, and if the gas guide chamber is therefore split into two or more conduits in the region upstream of the outlet opening of the air duct system, for instance, and the interpenetrating region is passed between the at least two conduits, then an especially expedient utilization of the available installation space is advantageously obtained. Unutilized regions are largely avoided in the available installation space for the air duct system.
If at least part of the cylinder head hood is used to form at least a portion of the gas guide chamber, then advantageously only a few components in all are needed, and the available installation space can be utilized especially
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Benton Jason
Greigg Edwin E.
Greigg Ronald E.
Kamen Noah P.
Robert & Bosch GmbH
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