DE1956589C3 - Device for venting the cooling water circuit of an internal combustion engine - Google Patents

Description

1 sheet of drawings

Claims (11)

get til. Furthermore, the cooler can respond faster Cooling liquid are filled, particularly advantageous • '- the invention is characterized in that as a result Device for ventilation of the cooling water of the now larger ^? ^
Circuit of an internal combustion engine, in particular 5 cut the bypass line
those for motor vehicles in which the machine can, · "!, · ..""". π .ι »* by means of the water supply line with the upper As the inventive; provision for the EmI uf water tank of a cooler and with the interposition of the cooling water circuit, e.g. is connected to the lower water tank of this cow- to- hand of the Vornchler shown in the drawing and in which the upper watering scheme is explained in more detail,
box through a partition with a connec- The Brennkraftmascn.ne indicated at 1 stands opening into an upper Luftabscheidekam- via a Kühlwasser-Vorlauflettung 2 with the upper and a lower collecting chamber divides ren water tank 3 a ^ s Kuhlers 4 in connection, and the water supply line to the collecting chamber 5 is connected to mer and in which the air exhaust of a cooling water pump 6 is connected to the Kuhlwasseremtrittsscheidekammer by means of a bypass line opening of the internal combustion engine,
with the return line or with the suction side The upper water tank 3 is separated by a the pump is in communication, thereby turned7 into an upper air separation chamber8 and indicates that the free cross section of the ao divides a lower collecting chamber 9. The bumps Connection opening (10) is larger than the free chambers 8 and 9 are through one m of the separation cross-section the bypass line (connection provided for cooling water wall 7: opening 10 with one pipe). other in connection. The connection opening IO forms the cooling water inlet of the separation chamber5 mer8. The cooling water outlet of this chamber8 is formed by some cooling water pipes 11 passing through the partition? from the remaining cooling water pipes 12 of the cooler 4 are divided off and a bypass line for the connection of the separation chamber 8 The invention relates to a device for venting the return line 13 between the lower water ventilation of the cooling water circuit of an internal combustion engine 5 and water pump 6,
machine, especially for motor vehicles, in the invention it is provided that the free the machine by means of a water supply line with a cross-section of the connecting opening 10 larger the upper water tank of a Kü.Jers and below as the free cross-section of the bypass line, d. H. Interposition of a pump by means of a rear 33 larger than the total cross-section of the divided Iaufleitung with the lower water tank of these cooling water pipes 11. As a result, the pressure in the cooler is connected and at which the upper water separation chamber 8 is relatively high, so that the transverse box can be kept small by a partition wall .mit a connection of the secondary flow line opening into an upper air separation chamber; that is, fewer cooling water pipes for and a lower plenum chamber are subdivided, and the 40 requires the bypass line. The filling of the cooling water supply line to the collecting chamber an- lers 4 via which the separation chamber 8 opens and in which the air separation chamber has the filler neck 14, in which a pressure relief valve is arranged by means of a bypass line with the return line, is made possible by the enlargement of the Vertung or with the suction side of the pump in connection opening 10 facilitated. The enlargement stands. ₄₅ tion of the pressure in the separation chamber 8 is the In known devices of this type (German seal at the separating point 15 between the patent specification 1 128 705, USA patents cooling water pipe packages 11 and 12 less critical. 3 004 626 and 3 132 690) survives due to the strong. The throttling effect at the connection opening to the opening 10 facilitates the separation of the air separation chamber, the risk that, in the event of 50 accruing larger amounts of gas via the overpressure valve located in the filler neck 14 from larger amounts of gas in the cooling liquid,
ζ. B. as a result of a leaky cylinder head gasket To facilitate the flow into the exhaust - The time that elapses until the amount of gas fully separating chamber 8 can get into the separating chamber in the area of the connection constantly, if the opening 10 is too large, a guide device can be provided. ₅₅ in the embodiment of the drawing from a By means of the invention, there is essentially a quicker separation of the gas or air particles, which is fastened to the partition 7 and is shown in dashed lines,
can be achieved. For this purpose, according to the invention, the enlargement of the connection finding in the device of the opening 10 mentioned above compared to the frc ^! The cross-section is provided so that the free cross-section of the connection opening 60 of the secondary flow line (cooling water pipes 11) can be larger than the free cross-section can also be used in a device with the secondary flow line. Due to the fact that the secondary flow line structurally differs from the cooling water enlargement of the connection opening, the scrrohrcii 11, 12 can be carried out separately and as a separate line of gas particles more freely and more quickly to the overpressure line 13 provided between the separation chamber 8 and the return separation chamber.