DE212019000108U1 - Structure of a ventilation pipe for a crankcase - Google Patents

Abstract

Ventilation pipe for crankcase, comprising a smooth pipe (1), two ends of the smooth pipe (1) being provided with a connecting piece (2) or a valve (3),
an electrical socket (5) is attached to one side of the connecting piece (2) by a fastening seat (4),
two cable harnesses (6) are led out of the electrical socket (5),
the two cable harnesses (6) are guided to two ends of the smooth tube (1), namely to the position of the connecting piece (2) or to the position of the valve (3), and
a cable connection (7) is provided at the end of each of the two cable harnesses (6);
characterized in that a projection (9) with a threaded hole is provided on the outside of the connecting piece (2) or the valve (3), a clamping slot (10) is provided on one side of the projection (9), and the tail of the Cable connection (7) is embedded in the clamping slot (10).

Description

Technical field

The utility model relates to a pipe structure of a vehicle, in particular to a ventilation pipe for the crankcase, it being able to automatically detect exhaust gas emissions. The invention belongs to the technical field of the pipeline of the motor vehicle.

State of the art

The ventilation pipe of the crankcase serves for the connection between an engine intake pipe and a crankcase. The exhaust gas is extracted from the crankcase by means of the vacuum in the intake pipe in order to ensure the exhaust gas circulation in the engine and to prevent the exhaust gas from being released into the atmosphere. The vent pipe structure in the prior art looks as follows: on the outer surface of the smooth pipe there are two cable harnesses with two cable connections and an electrical socket, the two ends of the vent pipe are a connecting piece and a valve, and a projection is on the connecting piece or provided on the valve body. There is a locking hole in the projection that can be attached to the engine block together with the cable connections. An alarm is triggered if the socket is connected to the power supply and the engine is running, if the cable connection has become loose. In this way, it can be quickly recognized that there is an exhaust gas leak at the connection between the ventilation pipe and the engine intake pipe / crankcase, which leads to air pollution and does not meet the emission requirements. If there was no wiring harness before, it was not noticeable even if the exhaust gas leaks. As long as the wire harness is wrapped in the foam, the process is done. And when installing the vehicle, the cable connections are aligned with the protrusions and then attached to the engine block with screws. I.e. an additional process will increase the assembly time of the entire vehicle and the workload.

Content of the invention

The problem to be solved by the utility model is to aim at the above-mentioned prior art and to provide a ventilation pipe for the crankcase, which is able to automatically detect the emission of the exhaust gas. It can not only detect whether the exhaust gas is leaking and causing air pollution, but also to improve the vehicle assembly time.

The technical solution with which our invention solved the above-mentioned problems is: a ventilation pipe for the crankcase, comprising a smooth pipe, two ends of the smooth pipe being provided with a connector or a valve, through an electrical socket on one side of the connector a fastening seat is attached, two wire harnesses are led out of the electrical socket, the two wire harnesses are led to two ends of the smooth tube, namely to the position of the connecting piece or to the position of the valve, at the end of each of the two wire harnesses a cable connection is provided, a protrusion with a threaded hole is provided on the outside of the connector or the valve, a clamping slit is provided on one side of the protrusion, and the tail of the cable connection is embedded in the clamping slit.

Preferably, a layer of polyurethane foam is formed by foaming on the surface of the smooth tube to wrap around the wire harness led out of the electrical outlet to the position of the valve.

1. 1. Auf der Außenfläche des glatten Rohrs befinden sich zwei Kabelbäume mit gleichzeitig zwei Kabelanschlüsse und einer elektrischen Steckdose. Wenn die Kabelanschlüsse am Motorblock befestigt sind, die elektrische Steckdose an die Stromversorgung angeschlossen ist und der Motor läuft, falls der Kabelanschluss sich gelockert hat, wird ein Alarm ausgelöst. Auf diese Weise kann es schnell erkannt werden, dass an der Verbindung zwischen dem Entlüftungsrohr und dem Motoransaugrohr / dem Kurbelgehäuse ein Luftleck vorliegt, das zu Luftverschmutzung führt und die Emissionsanforderungen nicht erfüllt.
2. 2. Polyurethan (PUR) -Material wird verwendet, um einen Aufschäumprozess auf der Außenfläche des glatten Rohrs durchzuführen. Da dieses Material die beste Wärmedämmwirkung aufweist, wird es sichergestellt, dass sich das Entlüftungsrohr in Hochtemperaturumgebungen nicht verformt.
3. 3. Ein Klemmschlitz ist an einer Seite des Vorsprungs vorgesehen, und der Schwanz des Kabelanschlusses wird in dem Klemmschlitz eingebettet, so dass sich der Kabelanschluss immer am Vorsprung befindet und der Kabelanschluss mit dem Gewindeloch ausgerichtet ist; während der Montage kann direkt mit Schrauben befestigt werden, ohne zu müssen, die Kabelanschluss an den Gewindelochen noch zu richten, wodurch sich die Montagezeit des Fahrzeugs um 10 bis 15 Sekunden verringert.

In comparison to the prior art, the invention has the following advantages:

1. 1. On the outer surface of the smooth pipe there are two cable harnesses with two cable connections and an electrical socket at the same time. If the cable connections are attached to the engine block, the electrical socket is connected to the power supply and the engine is running, if the cable connection has become loose, an alarm is triggered. In this way, it can be quickly recognized that there is an air leak at the connection between the ventilation pipe and the engine intake pipe / crankcase, which leads to air pollution and does not meet the emission requirements.
2. 2. Polyurethane (PUR) material is used to carry out a foaming process on the outer surface of the smooth pipe. Since this material has the best thermal insulation effect, it is ensured that the ventilation pipe does not deform in high-temperature environments.
3. 3. A clamp slot is provided on one side of the protrusion and the tail of the cable connector is embedded in the clamp slot so that the cable connector is always on the protrusion and the cable connector is aligned with the threaded hole; during assembly, screws can be attached directly without having to adjust the cable connection to the threaded holes, which reduces the assembly time of the vehicle by 10 to 15 seconds.

Figure list

• 1 Figure 3 is a schematic structural diagram of an embodiment of the invention.

• Glattes Rohr 1, Verbindungsstück 2, Ventil 3, Befestigungssitz 4, elektrische Steckdose 5, Kabelbaum 6, Kabelanschluss 7, Polyurethanschaumschicht 8, Vorsprung 9, Klemmschlitz 10.

It contains the following:

• Smooth tube 1 , Connector 2nd , Valve 3rd , Mounting seat 4th , electrical outlet 5 , Wiring harness 6 , Cable connection 7 , Polyurethane foam layer 8th , Head Start 9 , Clamping slot 10th .

Embodiments

As follows, the invention is further explained with reference to the drawings and the exemplary embodiments.

Like in the 1 shown, the crankcase ventilation pipe according to one embodiment comprises a smooth pipe 1 ;
two ends of the smooth tube 1 are with a connector 2nd or a valve 3rd Mistake;
an electrical outlet 5 is on one side of the connector 2nd through a mounting seat 4th appropriate;
two wire harnesses 6 are from the electrical outlet 5 led out;
the two harnesses 6 are separate to two ends of the smooth tube 1 led, namely to the position of the connector 2nd or to the position of the valve 3rd ;
and at the end of each of the two wire harnesses 6 is a cable connection 7 intended;
a layer of polyurethane foam 8th is by foaming on the surface of the smooth tube 1 formed to from the electrical outlet 5 to the position of the valve 3rd to wrap out lead harness;
a head start 9 with a threaded hole is on the outside of the connector 2nd or the valve 3rd intended;
the threaded hole and the cable connection are made with a bolt 7 attached to an engine block;
around the cable connection 7 to the threaded hole of the projection 9 to fix and to simplify the assembly is a clamping slot 10th on one side of the ledge 9 intended;
the tail of the cable connector 7 is in the clamping slot 10th embedded and fixed so that the cable connection 7 always at the head 9 and the cable connection 7 is aligned with the threaded hole;
during assembly, screws can be attached directly without having to adjust the cable connection to the threaded holes, which reduces the assembly time of the vehicle by 10 to 15 seconds.

If the electrical outlet is connected to the power supply and the engine is running, if the cable connection has become loose, an alarm is triggered. In this way, it can be quickly recognized that there is an air leak at the connection between the ventilation pipe and the engine intake pipe / crankcase, which leads to air pollution and does not meet the emission requirements.

Polyurethane (PUR) material is used to perform a foaming process on the outer surface of the smooth pipe to form a layer of polyurethane foam that matches the position of the valve 3rd leading wire harness wrapped; On the one hand, the wiring harness can be prevented from being exposed or touched by other machine parts, and on the other hand, the best thermal insulation effect of the polyurethane (PUR) can ensure that the ventilation pipe is not deformed in high-temperature environments.

In addition to the embodiments described above, the invention also includes other embodiments. All technical solutions designed by equivalent conversion or replacement should fall within the scope of the claims of the invention.

Claims (2)

Ventilation pipe for crankcase, comprising a smooth pipe (1), two ends of the smooth pipe (1) being provided with a connecting piece (2) or a valve (3), an electrical socket (5) on one side of the connecting piece (2) is attached by a fastening seat (4), two cable harnesses (6) are led out of the electrical socket (5), the two cable harnesses (6) are guided to two ends of the smooth tube (1), namely to the position of the connecting piece (2 ) or to the position of the valve (3), and at the end of each of the two cable harnesses (6) a cable connection (7) is provided; characterized in that a projection (9) with a threaded hole is provided on the outside of the connecting piece (2) or the valve (3), a clamping slot (10) is provided on one side of the projection (9), and the tail of the Cable connection (7) is embedded in the clamping slot (10). Breather pipe for crankcase after Claim 1 , characterized in that a Polyurethane foam layer (8) is formed by foaming on the surface of the smooth tube (1) in order to wrap the wiring harness led out of the electrical socket (5) to the position of the valve (3).

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