• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    FIELD OF THE INVENTION The invention relates to engine-making, namely to exhaust ventilation systems for internal combustion engines (ICE). and improves reliability by preventing icing at any 11 11 f 8 d C throttle position. In the intake tract of the internal combustion engine 1, the throttle valve 6 is installed in the housing 5. The crankcase of the internal combustion engine 1 through the ventilation duct 9 communicates with the housing 5 of the throttle valve 6. its end is made with a fork, the node of which is located in the throttle valve housing. The channels 13 and 14 of the disk 12, the pipe 11 are connected respectively to the throttle space (main ventilation) 15 and to the throttle space (additional ventilation) 16. In the valve body 5 there is an annular channel 17 associated with the cooling system of the internal combustion engine. Regulation of the temperature of the cooler in the channel 17 is carried out using a thermal valve 20 and a sensor 21 located in the intake path, and prevents icing of the throttle valve and the area around it. 7 hp f-ly, 1 ill. At S v Ё 10 XI g About OJ
    公开号:SU1704642A3
    申请号:SU894614453
    申请日:1989-07-06
    公开日:1992-01-07
    发明作者:Тепфер Вальтер
    申请人:Др Инж.Х.Ц.Ф.Порше А.Г. (Фирма)；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION The invention relates to engine-building, in particular to crankcase ventilation systems of internal combustion engines.
    The aim of the invention is to increase reliability by eliminating the possibility of icing at any throttle position.
    The drawing shows schematically the exhaust ventilation system of the crankcase of an internal combustion engine.
    Internal combustion engine 1 is supplied with fresh air through the air duct. Fresh air for the internal combustion engine 1 is supplied first through the intake manifold 2 and the air filter 3. From the air filter 3, fresh air is directed through the tubular insert 4 and then through the throttle body 5 in which the choke valve 6 is installed. air enters the air collector 7, and from there through the suction pipes 8 into the combustion chambers of the engine 1 internal combustion.
    The internal combustion engine 1 has a ventilation pipe 9 of the engine crankcase, from which exhaust ventilation pipe 10 is directed to the throttle body 5 and is attached to the connecting pipe 11 there. Located inside the throttle body 5, the end of the connecting pipe 11 is closed by a disk 12. The disk 12 has two channels 13 and 14 passing through it, the channel 13 falling into the main location 15 of the exhaust ventilation, and the channel 14 falling into the additional space 16 exhaust ventilation. The main location 15 of the exhaust ventilation is upstream in the flow direction before the throttle valve b, and the extra space 16 of the exhaust ventilation is located downstream in the direction of flow behind the throttle valve 6. Channel 14 and the extra ventilation space 16 have a clearly smaller transverse area sections than the channel 13 and the main place 15 exhaust ventilation,
    An annular channel 17 is provided in the throttle body 5, which is located concentrically to the throttle valve 6 and extends a short distance from the connecting pipe 11 and the channels 13 and 14.
    This channel 17 through the circulation channel 18 and the outlet 19 is connected to the cooling system of the internal combustion engine 1. Since the danger of icing for the throttle valve 6 exists only at appropriate outdoor temperatures, the thermal valve 20, which
    together with the air-temperature sensor 21 is inserted into the tubular part 4 of the air path, regulates the flow of the cooling agent depending on and in the interval of certain limits of the temperature of the air drawn in. By placing the vents 15 and 16 of the exhaust ventilation near the channel 17, the icing of these vents is also prevented. Channels 13 and 14
    0 can be made in the disk 12 in the form of drilled holes.
    The connecting pipe 11 as an alternative, you can make solid together with the disk 12 in the form of a casting. WITH
    5 in order to reduce installation costs, the connecting pipe 11 can be made solid with the throttle body 5 and the casting disk 12.
    0 In normal engine load mode 1 internal combustion, throttle valve 6 is open. The air passing through the air intake path has a lower pressure compared to
    5 gases in the crankcase 1.
    This pressure differential serves to transport engine crankcase gases through exhaust ventilation pipe 10 from engine 1 of internal combustion to throttle body 5. Due to the larger cross-sectional area of main exhaust air location 15, gases from the engine crankcase flow mainly through this place in the air-suction path and there they are mixed with the incoming fresh air and fed to the engine 1 of the internal combustion. The cross-sectional areas of the channels 13 and 14 are designed in such a way that the resulting gas volume of the crankcase of the engine can be reliably retracted. If the internal combustion engine 1 is idling, then the throttle body
    5 is closed by a throttle valve b located transverse to the direction of intake air. In this case, the throttle valve b separates the main place 15 of the exhaust ventilation from the additional place 16 of the exhaust ventilation. 0 Since the internal combustion engine 1 continues to supply fresh air through the air intake path and the throttle valve 7 blocks the air intake path, in the downstream direction of the flow in the throttle valve
    6 parts of the air intake tract there is a strong low pressure.
    This reduced pressure sucks up the crankcase gases of the engine through channel 14 to the additional space 16 of the exhaust ventilation. The exit area of the additional space 16 exhaust ventilation is provided for significantly less than the output area of the main space 15 exhaust ventilation, since the amount of gases in the engine crankcase formed during idling is correspondingly insignificant.
    权利要求:
    Claims (8)
    [1]
    1. A crankcase exhaust ventilation system for an internal combustion engine comprising an intake duct, a throttle valve located in the housing and installed in the intake duct, and a ventilation duct, one end of which is connected to the crankcase and the other end is branched. located in the throttle body, connected to the throttle body, and additionally to the throttle body, with a heating channel in the throttle body, communicated with the system a cooling channel theme, characterized in that, in order to increase reliability by eliminating the possibility of icing at any position of the throttle valve, the branch section of the ventilation duct is located inside the throttle body.
    [2]
    2. The system according to claim 1, characterized in that the node branching is made in the form
    a connecting pipe installed in the case of the throttle valve connected to the ventilation duct, and its end located in the case of the throttle valve is blocked by a circular bottom in which the channels connected respectively to the throttle and rear throttle space are made.
    ten
    [3]
    3. The system of PP. 1 and 2, that is, with the fact that the heating channel in the throttle body is ring-shaped and located in the zone of the connecting pipe.
    [4]
    4. The system according to claim 3. characterized in that a thermal valve is placed in the circulation channel, which, together with a temperature sensor, is installed in the intake duct.
    [5]
    5. The system according to claim 2, characterized in that the bottom is made in the form of a circular disc,
    [6]
    6. The system of Claim 2, wherein the connecting nipple is made in one piece as a casting.
    [7]
    7. The system according to claim 2, characterized in that the throttle body and the connecting pipe and the bottom are made in one piece as a casting.
    [8]
    8. The system of PP. 5-7, different with that. that the channels in the bottom are made in the form of drillings.
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP0351521A3|1990-05-30|
    DE58905231D1|1993-09-16|
    JP2662441B2|1997-10-15|
    EP0351521B1|1993-08-11|
    EP0351521A2|1990-01-24|
    JPH0267414A|1990-03-07|
    US4922882A|1990-05-08|
    DE3824791A1|1990-01-25|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3824791A|DE3824791A1|1988-07-21|1988-07-21|CRANKCASE VENTILATION|
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