Electromagnetic valve and internal combustion engine cooling system with electromagnetic valve
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01P-007/14
F16K-017/04
F16K-031/06
F01P-007/16
F16K-015/18
출원번호
US-0116516
(2014-12-16)
등록번호
US-10190476
(2019-01-29)
우선권정보
DE-10 2014 101 437 (2014-02-05)
국제출원번호
PCT/EP2014/078000
(2014-12-16)
국제공개번호
WO2015/117707
(2015-08-13)
발명자
/ 주소
Fangauer, Philipp
출원인 / 주소
ETO Magnetic GmbH
대리인 / 주소
Bachman & LaPointe, PC
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
A solenoid valve (1), in particular for closing a bypass in a coolant circuit of an internal combustion engine, with an energizable winding (3) and an armature (2) that is adjustable in the direction of a core by energizing the winding, which armature (2) force-loads a valve plunger (8) with energiz
A solenoid valve (1), in particular for closing a bypass in a coolant circuit of an internal combustion engine, with an energizable winding (3) and an armature (2) that is adjustable in the direction of a core by energizing the winding, which armature (2) force-loads a valve plunger (8) with energized winding (3) in the direction of a closing position, in particular against the spring force of a resetting spring (18), wherein when the armature (2) is energized a pin (12) which is adjustable together with the armature for adjusting the valve plunger (8) in the direction of the closing position is provided, by way of which the valve plunger (8) by way of adjusting the armature (2) upon energization can be force-loaded in the direction of the closing position, and which is spring force-loaded by a pressure limiting spring (13) in the direction of the closing position of the valve plunger (8) and which by way of the valve plunger (8) upon an axial valve plunger movement of the valve plunger (8) out of its closing position is adjustable for opening the solenoid valve (1) despite the armature (2) that is adjustable in the direction of the core (6) against the spring force of the pressure limiting spring (13).
대표청구항▼
1. A solenoid valve (1) for closing a bypass in a coolant circuit of an internal combustion engine, with an energizable winding (3) and an armature (2) that is adjustable in the direction of a core by energizing the winding, which armature (2) force-loads a valve plunger (8) in the direction of a cl
1. A solenoid valve (1) for closing a bypass in a coolant circuit of an internal combustion engine, with an energizable winding (3) and an armature (2) that is adjustable in the direction of a core by energizing the winding, which armature (2) force-loads a valve plunger (8) in the direction of a closing position against the spring force of a resetting spring (18) when the winding (3) is energized, wherein a pin (12) is adjustable together with the armature for adjusting the valve plunger (8) in the direction of the closing position when the armature (2) is energized, whereby the valve plunger (8) can be force-loaded in the direction of the closing position, wherein the pin (12) is spring force-loaded by a pressure limiting spring (13) in the direction of the closing position of the valve plunger (8), whereby the valve plunger (8) is adjustable out of its closing position against the spring force of the pressure limiting spring (13) for opening the solenoid valve (1) despite the armature (2) being force-loaded in the direction of the core (6), wherein a magnetic flux circuit of the winding (3) and the pressure limiting spring (13) are designed so that in the case of a control voltage that is minimally necessary for closing the solenoid valve, the closing force exerted on the valve plunger (8) via the armature (2) is lower than the spring force exerted on the valve plunger (8) by the pressure limiting spring (13) and with a maximum control voltage, and a limit voltage between the minimum control voltage and the maximum control voltage, the closing force exerted on the valve plunger (8) by way of the armature (2) is greater than the spring force exerted on the valve plunger (8) by way of the pressure limiting spring (13). 2. The solenoid valve (1) according to claim 1, wherein means for maintaining a minimum pressures limiting spring preload are provided. 3. The solenoid valve (1) according to claim 1, wherein the pin (12) is arranged in an armature bore (11) of the armature (2). 4. The solenoid valve (1) according to claim 3, wherein the pressure limiting spring (13) spring force-loads the pin (12) against a pin stop (16) formed on the armature (2). 5. The solenoid valve (1) according to claim 3, wherein the pressure limiting spring (13) is arranged within the armature bore (11). 6. The solenoid valve (1) according to claim 5, wherein the pressure limiting spring (13) supports itself on the side facing away from the pin (12) on an abutment element (15) that is fixed in or on the armature (2), by way of the axial position of which relative to a pin stop (16) in the armature (2) the preload of the pressure limiting spring (13) is adjustable. 7. The solenoid valve (1) according to claim 1, wherein the pin (12) and the compression spring (13) are arranged in a cage that is arranged between the armature (2) and the valve plunger (8) for limiting a maximum elongation of the pressure limiting spring (13), wherein the cage with the valve plunger (8) located in the closing position is adjusted, at least in portions, axially into the core. 8. The solenoid valve (1) according to claim 7, wherein the pressure limiting spring (13) on the side facing away from the pin supports itself on an abutment element, fixed on or in the cage (22), through the axial position of which relative to a pin stop (16) in the cage (22) the preload of the pressure limiting spring (13) is adjustable. 9. The solenoid valve (1) according to claim 1, wherein a spring force of the pressure limiting spring (13) with the armature (2) adjusted in the direction of the core and the valve plunger (8) located in the closing position is greater than the spring force of the resetting spring (18). 10. The solenoid valve (1) according to claim 1, wherein the pin (12) supports itself directly on the valve plunger (8). 11. The solenoid valve (1) according to claim 1, wherein the valve plunger (8) interacts with a closing body (9) which by the valve plunger (8) in its closing position is pressed against a valve seat. 12. The solenoid valve (1) according to claim 1, wherein the solenoid valve (1) is voltage controlled. 13. The solenoid valve (1) according to claim 1, wherein the armature (2) with minimal voltage for closing the solenoid valve (1) with the valve plunger (8) in the closing position is spaced from the core (6) by way of a residual air gap or supports itself, with maximum permissible voltage, on the core (6), by way of a non-stick disc (19) or non-stick groove. 14. An internal combustion engine cooling system (23) with a cooling medium pump (24) and with a slide (25) for switching over between a small and a large coolant circuit, wherein the slide (25) is hydraulically actuatable by way of a cooling medium pressure in a switching chamber (26) and wherein a solenoid valve (1) according to claim 1 closes a bypass to a coolant tank, with the valve plunger (8) located in the closing position for increasing the cooling medium pressure and wherein, when there is an impermissibly high cooling medium pressure in the switching chamber (26), and despite energized winding (3) and an armature (2) adjusted in the direction of the core (6), because of the force exerted by the cooling medium, by way of a valve closing body, on the valve plunger against the spring force of the pressure limiting spring (13), the pin (12) moves out of the closing position to open the solenoid valve (1) and thereby open the bypass. 15. An internal combustion engine according to claim 14, wherein the solenoid valve (1), the slide (25) and the cooling medium pump (24) are arranged in a common cast metal housing.
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이 특허에 인용된 특허 (3)
Schnalzger Guenther,DEX ; Zimmermann Peter,DEX ; Mueller Robert,DEX, Barrier valve with pressure limiting function in particular for slip-controlled hydraulic brake systems of motor vehicles.
Alaze Norbert (Markgroeningen DEX) Megerle Friedrich (Asperg DEX) Wilde Werner (Schwieberdingen DEX) Kaes Guenter (Stuttgart DEX), Hydraulic brake system for motor vehicles.
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