Control valve having an outflow channel
First Claim
1. A control valve for a camshaft adjustment device, comprising:
- a valve housing including an inflow connection P, two control connections A and B, and an outflow connection T;
a pressure medium-conducting insert, coaxially situated in a receptacle of the valve housing, the pressure medium-conducting insert having an inflow passage, an outflow passage, and two control passages; and
a control piston coaxially guided in the pressure medium-conducting insert and having an inflow groove, an outflow groove, and a control groove on an outer circumference, the control piston including a piston head forming an actuating surface on a front side and defining a first end of the control valve on an actuation side,the outflow passage merging into an outflow channel extending in an axial direction, at least one of the two control connections A, B connectable with the outflow connection T via the outflow channel, and the outflow connection T being situated in an area between a second end of the control valve, opposite from the first end, and the two control connections A, B.
1 Assignment
0 Petitions
Accused Products
Abstract
A control valve (1) for a camshaft adjustment device, and to an internal combustion engine having a camshaft adjustment device and a control valve (1) is provided. The control valve (1) includes a valve housing (3) and a pressure medium guiding insert (23) arranged coaxially in a recess of the valve housing (3). A discharge passage (27, 28) of the pressure medium guiding insert (23) transitions into a discharge duct (22) running in the axial direction, wherein the discharge connection T can be connected to the control connections A, B and wherein the discharge connection T is arranged in a region between the second end (8), which is opposite the first end (6), and the control connections A, B.
10 Citations
10 Claims
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1. A control valve for a camshaft adjustment device, comprising:
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a valve housing including an inflow connection P, two control connections A and B, and an outflow connection T; a pressure medium-conducting insert, coaxially situated in a receptacle of the valve housing, the pressure medium-conducting insert having an inflow passage, an outflow passage, and two control passages; and a control piston coaxially guided in the pressure medium-conducting insert and having an inflow groove, an outflow groove, and a control groove on an outer circumference, the control piston including a piston head forming an actuating surface on a front side and defining a first end of the control valve on an actuation side, the outflow passage merging into an outflow channel extending in an axial direction, at least one of the two control connections A, B connectable with the outflow connection T via the outflow channel, and the outflow connection T being situated in an area between a second end of the control valve, opposite from the first end, and the two control connections A, B. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An internal combustion engine comprising:
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a camshaft adjustment device; and a control valve including a valve housing situated in a receptacle of a camshaft and which includes an outflow connection T, two control connections A and B, and an inflow connection P situated within the camshaft, and a pressure medium-conducting insert, situated in a receptacle of the valve housing, and having an inflow passage, an outflow passage, and two control passages, and a control piston guided in the pressure medium-conducting insert and on an outer circumference having an inflow groove, an outflow groove, and a control groove, the outflow passage merging into an outflow channel extending in an axial direction, whereby the outflow connection T is connectable with the two control connections A, B, and the outflow connection T is connected, via a connection in the camshaft, to a cavity, a hydraulic medium line, or a volume accumulator.
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Specification