Pipe module

Details Pipe module Pipe module

1998-04-08

2000-03-28

Wolfe, Willis R.

Internal-combustion engines

Intake manifold

12318453, 12318457, 12318461, F02M 3512

Patent

active

06041748&

DESCRIPTION:

BRIEF SUMMARY
The invention relates to a pipe module, especially in the intake system of an internal combustion engine, with the pipe module having at least one curved pipe.
Pipe modules of this kind are known for example from DE-OS 44 18 001.
The disadvantage of this known pipe module is that so far the space located inside the curvature of the pipe has been insufficiently utilized.
It is also known that oil can be deposited in the vicinity of the crankcase. A bypass resonator is known from DE-OS 43 36112. An energy strip is also known from DE-OS 4116 326. Hence the goal of the invention is to improve a pipe module of the species recited at the outset in such fashion that a compact space-saving, less expensive pipe module that is easy to mount is provided.
This goal is achieved according to the invention by virtue of the fact that at least one functional element is located essentially in the curved area, especially inside the latter.
In this manner, a compact and space-saving design is obtained, manufacturing time is saved, and weight savings are achieved overall in the engine compartment because functional elements at other points, together with the connecting lines, are eliminated. In this manner, the number of tools necessary can also be reduced, with a corresponding variety of variations.
One advantageous improvement on the invention provides that the functional element is a damping volume. By providing the functional element directly in the vicinity of the area where it produces its effect, connecting pathways required for a solution that is remote from the location are eliminated. This produces an efficient usage of material, and flow losses are reduced for example.
In another advantageous improvement on the invention, provision is made such that the functional element is an oil separator, especially for venting the crankcase. By locating the functional element in the area where the crankcase gases escape, short paths result that lead to an efficient usage of materials and compact structures.
According to the invention, provision is made in another embodiment such that the functional element is a bypass resonator. By locating the functional element directly in the vicinity of the area where it operates, connecting paths required for a solution remote from such a location are eliminated. This leads to an efficient usage of material, compact elements result, and flow losses are also reduced for example.
In one advantageous embodiment of the invention, provision is made such that the functional element is a throttle valve. By locating the functional element directly in the vicinity of the area where it operates, connecting pathways that are required for solutions remote from the area of operation are limited. This results in an efficient usage of material, compact elements are obtained, and flow losses are reduced as well for example.
In another improvement according to the invention, provision is made such that the pipe module is made of plastic and/or metal. Both materials exhibit advantageous properties as far as the stresses in the application are concerned and are also very variable in the way that they are processed. Both materials can be worked by casting for example, which is advantageous for mass production.
Another advantageous improvement on the invention provides that the pipe module has two, three, four, five, six, eight, ten, or twelve pipes. This modular application of the invention provides cost advantages in mass production.
An improvement on the invention according to the invention provides that the functional elements communicate with the internal combustion engine through connections. The fact that the functional elements, depending on their applications, communicate with the internal combustion engine in the manner according to the invention means that compact dimensions as well as flow-favorable relationships are created, saving space and expense. The total weight is reduced and so is consumption.
Another improvement according to the invention provides that the functional elements are integrate

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