DE8900612U1 - Power train for crankcase ventilation in turbocharged internal combustion engines - Google Patents

Description

... _k KLÖCKNER-HUMBOLDT-DEUTZ ACS : *! ; . · .··.'..:

* , ^: .I. '.S ⁰ W KSAa »P. on 24.02.1989

D 89/002 DE GM (0542s) AE-GP 1 El/Bi

Cable harness for crankcase ventilation in charged internal combustion engines

DESCRIPTION

The innovation concerns a line harness for crankcase ventilation for the purpose of inlet valve seat lubrication in turbocharged diesel internal combustion engines.

From the publication DE-OS 37 04 567, a naturally aspirated engine with a return line for leakage gases from the crankcase into the intake pipes of the cylinders in the cylinder head is known, whereby the return line is connected to each intake pipe of a cylinder via a distribution line. The distribution line is integrated in the cylinder head or in the cylinder head and is connected directly to the intake port via a connecting channel.

The innovation is based on the task of creating a closed crankcase ventilation system in a space-saving and simple design, similar to that in a turbocharged engine.

This task is solved by the characteristic part of Aneprucha 1.

16.01.1989

D 89/002 EN GM

With the aid of a distribution bore arranged in the cylinder head with a transverse bore opening into it, a pipe-free or pipe-poor, simplified connection is created between the ventilation box and the intake pipe in front of the exhaust turbocharger.

According to claim 3, the axis of the cross bore on the cylinder head is approximately halfway along the length of the cylinder head, resulting in the same connecting line lengths for different ATL positions on both engine front sides.

Advantageously, the cylinder head cross bore is transferred without a line to a channel arranged on the air intake pipe of the internal combustion engine by means of an interposed sealing element. The exhaust air end of the channel on the air intake pipe is connected to the compressor intake by means of an angle screw piece with a line piece attached to it.

% pipe. The pipe extended by the angle screw

20 The pipe section preferably ends in a rubber fitting
to be led.

R Rubber fitting that faces the intake port in front of ATL

For further explanation of the innovation, reference is made to the drawing, which shows a preferred embodiment.

The figure shows a section of a cylinder head 2, which is attached to the crankcase 1 and whose intake channel 7 is connected to the charge air duct 8 of the air intake pipe 3. An exhaust manifold 5 directs the hot exhaust gases of the internal combustion engine to the exhaust gas turbocharger (ATL) 4 and drives a

t » · · ft ft M III M I«

16.01.1989

D 89/002 EN GM

Turbine, which in turn drives the compressor (not shown here). The fresh air is supplied to the compressor by
da&bgr; compressor intake pipe 6 leads to the cylinder head
There is a longitudinal bore 10, in which a transverse bore
11 without a cable. With the interposition of a
Sealing element 14 (molded seal or round seal) is
the overbore in an axially parallel ^

and channel 15 attached to the air intake pipe 3 of the internal combustion engine. At the exhaust air end of the
An angle screw piece 12 is screwed into channel 15,

wherein the connecting line 12a is connected to an adapted rubber molding 13, which in
Direction of the compressor intake pipe 6 in front of the ATL. ■';;

The transverse bore 11 leading into the charge air line 8 is

so that its axis is approximately halfway* along the length of the
cylinder head. This results in the same connecting line lengths for different ATL positions. ·

The modifications listed in accordance with this innovation j

cations on the basic components attached to the engine (cylinder head, air intake pipe), the crankcase leak gases enriched with oil mist are conveyed to the exhaust gas compressor

housing. The outlet point is ..;

inside the exhaust box and no -3

additional openings in the exhaust air sheeting. |

This allows a simplified connection between the vent S

ation box and intake manifold before ATL, where 1

the different ATL positions equally well and with |

low wiring effort and few throttling points |

a are reachable.

Claims (5)

KLÖCKNER-HUMBOLDT-DEUTZ AQI J '\ '. &iacgr; ,' *..*: &iacgr; " &iacgr;&iacgr;&iacgr; ' t 5b00:Rrfln.' döv on 24.02.1989 D 8*^/002 D^ GM (0542s) AE-QP 1 El/Bi yCable harness for crankcase ventilation in supercharged internal combustion engines CLAIMS 1. Pipeline for crankcase ventilation in internal combustion engines, whereby the crankcase ventilation gases are guided from a ventilation box through a distribution bore (10) in a cylinder head, characterized in that the internal combustion engine is charged by means of a charger, that the distribution bore (10) is connected to at least one transverse bore (11) and that a line leading to the combustion air line in the area of the charger is connected to the transverse bore is. 2. Crankcase ventilation line according to claim 1, characterized in that the transverse bore (11) is connected to a channel (15) integrated in the air intake pipe (3) of the internal combustion engine. 3. Cable harness for crankcase ventilation according to one of the preceding claims, characterized in that the axis of the transverse bore (11) lies approximately halfway along the length of the cylinder head (2). D &Bgr;9/002 DE GM AE-GP 1 El/Bi 4. Cable harness for crankcase ventilation according to one of the preceding claims, characterized in that the exhaust air end of the duct (15) is connected to the compressor intake pipe (6) of the charger (4). 5. Cable harness for crankcase ventilation according to one of the preceding claims, characterized in that the connection between the channel (15) and the compressor intake pipe (6) consists of an angle screw piece (12) attached to the channel end and a line piece (12a) connected thereto.