GASKET

There is provided a gasket with which uniform sealing a space between a cylinder head and a cylinder block may be achieved. 1. A gasket to be attached between a cylinder head and a cylinder block of an internal combustion engine , the gasket comprising:a lower base plate being flat plate-shaped and disposed on a side of the cylinder block;an upper base plate being flat plate-shaped and disposed on a side of the cylinder head; anda shim plate being flat plate-shaped and disposed between the lower base plate and the upper base plate,whereinthe lower base plate includes cylinder-block-side full-bead sections being annular and corresponding to each of the annular deck surfaces of each bore wall of the cylinder block,the upper base plate includes cylinder-head-side full-bead sections being annular, facing the cylinder-block-side full-bead sections, and corresponding to each of the cylinder head surfaces, of the cylinder head, facing each deck surface,the shim plate includes wedge sections being annular, disposed between the cylinder-block-side full-bead sections and the cylinder-head-side full-bead sections respectively, and extending along the cylinder head surfaces, andthe shim plate includes extended wedge sections formed extending from parts, in a circumferential direction, of the wedge sections positioned on both ends in an arrangement direction of the wedge sections, to outer upper surfaces of outer walls of the cylinder block, which are surfaces defining cooling water channels with the bore walls.2. The gasket according to claim 1 , wherein each of the extended wedge sections extend in opposite directions from each other in the arrangement direction of the wedge sections.3. The gasket according to claim 1 , whereinthe lower base plate includes cylinder-block-side cooling-water half-bead sections corresponding to the outer upper surfaces of the cylinder block,the upper base plate includes cylinder-head-side cooling-water half-bead sections facing the cylinder-block ...

Gasket

A gasket to be attached between a cylinder head and a cylinder block of an internal combustion engine includes a pair of substrates, an intermediate plate disposed between the pair of substrates, and a spacer disposed between the pair of substrates. Each of the pair of substrates includes a cooling water sealing bead for sealing a cooling water passage surrounding a bore wall formed in the cylinder block. The intermediate plate includes a wedge portion formed in a shape corresponding to a deck surface of the bore wall of the cylinder block so as to be sandwiched between the bore wall and the cylinder head. The spacer is formed so as to extend in a cross direction S crossing an arrangement direction L of boreholes of the cylinder block without overlapping the cooling water sealing bead.

Metal gasket

Orientation sensor for downhole tool

A downhole drilling apparatus incorporating an orientation sensor (24) is disclosed. The orientation sensor is mounted to a housing (16) for providing a signal representing the orientation of the housing, and is connected to a first transceiver coil (26). A second transceiver coil (30) and a series of magnets (32) are mounted to a rotary shaft (18). As the shaft rotates relative to the housing, passage of the magnets past the first transceiver coil generates a voltage to provide electrical power to the sensor, and electromagnetic coupling between the first and second transceiver coils enables signals from the sensor to be transmitted to a measurement while drilling tool mounted on the rotary shaft.

Metal gasket

Vertical direction adjustment tool for downhole drilling apparatus

A direction adjustment tool (2) for a downhole drilling apparatus is disclosed. The tool has a tubular housing (8) adapted to be incorporated into a downhole drilling apparatus, and steering blades (10) mounted to the housing. A drive shaft (16) transmits drive to a drill bit of a drilling apparatus, wherein the shaft defines a passage for transmitting drilling fluid to the drill bit. A first pressure chamber (32) is defined between the housing and the shaft and communicates with the passage, wherein the steering blades are moved from retracted positions to extended positions thereof as a result of increase of fluid pressure the first pressure chamber. A pendulum member (54) is pivotably mounted to extend in a vertical orientation when the shaft is not rotating relative to the housing, and pistons (60) prevent movement of at least one steering blade to the extended position thereof as a result of the angle between a longitudinal axis of the shaft and the longitudinal axis of the pendulum member exceeding a predetermined amount. This causes at least one steering blade to adjust the direction of drilling of the drilling apparatus towards a vertical direction and/or to resist movement of the direction of drilling away from a vertical direction.

Cylinder head gasket

多気筒エンジンのシリンダヘッドとシリンダブロックとの合わせ面形状

管継手

Dichtung

Dichtung (1), die zwischen einem Zylinderkopf und einem Zylinderblock (3) eines Verbrennungsmotors (100) angebracht wird, versehen mit: einem Paar von Grundplatten (11, 12), einer zwischen dem Paar von Grundplatten (11, 12) angeordneten Mittelplatte (13) und mindestens einem zwischen dem Paar von Substraten (11, 12) angeordneten Abstandshalter (14), dadurch gekennzeichnet, dass Grundplatte des Paares von Grundplatten (11, 12) eine Kühlwasserdichtsicke aufweist, die ein Sickenteil zur Abdichtung eines Kühlwasserkanals (60) ist, der eine am Zylinderblock (3) gebildete Bohrungswand (31) umgibt, die Mittelplatte (13) einen Abschnitt aufweist, der in einer einer Deckfläche der Bohrungswand entsprechenden Form gebildet ist (13a), um zwischen der Bohrungswand (31) des Zylinderblocks und dem Zylinderkopf eingeklemmt zu werden, und der mindestens eine Abstandshalter (14) derart gebildet ist, dass sich dieser in einer Querrichtung S erstreckt, die quer zur Aufstellrichtung L der Bohrlöcher (31b) des Zylinderblocks (3) liegt, ohne die Kühlwasserdichtsicke zu überlappen, und zwischen dem Zylinderblock (3) und dem Zylinderkopf an jedem Ende in Aufstellrichtung L der Bohrlöcher (31b) eingeklemmt wird.

Gasket

There is provided a gasket with which uniform sealing a space between a cylinder head and a cylinder block may be achieved. A gasket (1) includes a shim plate (13) that is disposed between a lower base plate (11) and an upper base plate (12). The shim plate (13) includes annular wedge sections (13a) disposed between cylinder-block-side full-bead sections (11a) provided at the lower base plate (11) and cylinder-head-side full-bead sections (12a) provided at the upper base plate (12) respectively, and extending along cylinder head surfaces (21a), and the shim plate (13) includes extended wedge sections (13b) formed extending, from parts, in a circumferential direction, of the wedge sections (13a) positioned on both ends in an arrangement direction of the wedge sections (13a), to outer upper surfaces (32a) of outer walls (32) of the cylinder block (3), which are surfaces defining cooling water channels (60) with bore walls (31).

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