Abstract: A switchable rocker arm can comprise a main body configured to rotate around a rocker shaft. The main body can comprise a valve end and a cam end. A second body can comprise a cam-receiving transfer portion and a latch bore through the transfer portion. The cam-receiving transfer portion can include a bearing axle and a roller bearing. A latch assembly including a first latch and a second latch can be mounted in the latch bore.

Abstract: An exhaust valve rocker arm assembly selectively operable in an engine braking mode includes a rocker arm and a valve end configured to selectively act on a valve bridge to engage a first and a second exhaust valve. The valve end includes a brake capsule to selectively extend in a first position to act on the first exhaust valve through the valve bridge. The valve end also includes a lost motion mechanism capable of selectively transmitting motion of the rocker arm to the valve bridge. The lost motion mechanism may integrate a hydraulic lash adjuster in particular embodiments.

Abstract: A switchable rocker arm can comprise a main body configured to rotate around a rocker shaft. The main body can comprise a valve end and a cam end. A second body can comprise a cam-receiving transfer portion and a latch bore through the transfer portion. The cam-receiving transfer portion can include a bearing axle and a roller bearing. A latch assembly including a first latch and a second latch can be mounted in the latch bore.

Abstract: A variable valve lift rocker arm assembly can include a latching axle assembly comprising a roller latch assembly and a first latch receiver assembly; an outer body configured to rotate around a rocker shaft, the outer body comprising at least a valve end, and a cam end comprising an outer axle bore for seating the first latch receiver assembly of the latching axle assembly; an inner body configured to rotate around the rocker shaft, the inner body comprising an inner axle bore configured for seating the roller latch assembly of the latching axle assembly; a main roller operatively coupled to the outer body; and a secondary roller operatively coupled to the inner body; wherein the roller latch assembly and the first latch receiver assembly are configured to selectively operatively couple the outer body to the inner body.

Abstract: A valve bridge assembly for an engine includes a main body configured to engage a distal end of at least one valve stem. A receiving body is movably disposed within a cavity of the main body between a first position and a second position. The receiving body includes at least one key-receiver. A piston body is movably attached to the main body and includes a key configured to be received into the key-receiver of the receiving body. When the receiving body is in the first position. the key-receiver feature and key are misaligned and a force applied to the piston body is transmitted to the at least one valve stem via the receiving body and the main body. When the receiving body is in the second position, the key-receiver and the key are aligned and a force applied to the piston body causes the piston body to be displaced relative to the main body.

Abstract: A rocker arm assembly is rotatable about a rocker shaft and includes a first portion and a second portion. The first portion is configured to receive a valve lift profile. The second portion is configured to operatively engage with one or more valves. The rocker arm assembly also includes an actuator assembly switchable between a first state and a second state, and a plunger assembly provided within a plunger bore and having a plunger axis angled to a longitudinal axis of the actuator assembly.

Abstract: A rocker arm assembly capable of switchably deactivating a roller assembly includes a valve end and a cam end having first and second roller assemblies, and a latching mechanism. The latching mechanism includes rocker body pins and roller body pins. The rocker body pins include first and second end pins and a connection pin, each pin provided within a rocker arm body along a latching axis. The roller body pins include first and second locking pins, each roller body pin provided within a respective roller assembly. In a first latching mode, the first roller assembly is deactivated and the second roller assembly is activated. In a second latching mode, the second roller assembly is deactivated and the first roller assembly is activated.

Abstract: A latch assembly can comprise a main latch pin assembly comprising a first diameter on a first main pin face, and a secondary latch piston comprising a second diameter on a secondary piston face. The secondary latch piston can be configured to selectively act on the main latching pin assembly. The main latch pin assembly can be biased to oppose the secondary latch piston. The first diameter can be greater than the second diameter. A rocker arm assembly can comprise the latch assembly. A primary arm can be configured to receive the main latch pin assembly. A secondary arm can be configured to receive the secondary latch piston.

Abstract: A switchable rocker arm can comprise a main body configured to rotate around a rocker shaft. The main body can comprise a valve end and a cam end. A second body can comprise a cam-receiving transfer portion and a latch bore through the transfer portion. The cam-receiving transfer portion can include a bearing axle and a roller bearing. A latch assembly including a first latch and a second latch can be mounted in the latch bore.

Abstract: A latch assembly can comprise a main latch pin assembly comprising a first diameter on a first main pin face, and a secondary latch piston comprising a second diameter on a secondary piston face. The secondary latch piston can be configured to selectively act on the main latching pin assembly. The main latch pin assembly can be biased to oppose the secondary latch piston. The first diameter can be greater than the second diameter. A rocker arm assembly can comprise the latch assembly. A primary arm can be configured to receive the main latch pin assembly. A secondary arm can be configured to receive the secondary latch piston.

Abstract: A rocker arm assembly capable of switchably deactivating a roller assembly includes a valve end and a cam end having first and second roller assemblies, and a latching mechanism. The latching mechanism includes rocker body pins and roller body pins. The rocker body pins include first and second end pins and a connection pin, each pin provided within a rocker arm body along a latching axis. The roller body pins include first and second locking pins, each roller body pin provided within a respective roller assembly. In a first latching mode, the first roller assembly is deactivated and the second roller assembly is activated. In a second latching mode, the second roller assembly is deactivated and the first roller assembly is activated.

Abstract: A valve bridge assembly for an engine includes a main body configured to engage a distal end of at least one valve stem. A receiving body is movably disposed within a cavity of the main body between a first position and a second position. The receiving body includes at least one key-receiver. A piston body is movably attached to the main body and includes a key configured to be received into the key-receiver of the receiving body. When the receiving body is in the first position. the key-receiver feature and key are misaligned and a force applied to the piston body is transmitted to the at least one valve stem via the receiving body and the main body. When the receiving body is in the second position, the key-receiver and the key are aligned and a force applied to the piston body causes the piston body to be displaced relative to the main body.

Abstract: A rocker arm assembly can include a latch assembly, a primary arm configured to receive the latch assembly, and a secondary arm configured to receive the latch assembly. The secondary arm includes a secondary arm body and a piston support ring. A pivot slot passes through the primary arm, the secondary arm body, and the piston support ring.

Abstract: A latch assembly (500) can comprise a main latch pin assembly (531, 532) comprising a first diameter (D1) on a first main pin face (512, 522), and a secondary latch piston (541, 561) comprising a second diameter (D2) on a secondary piston face (543, 563). The secondary latch piston can be configured to selectively act on the main latching pin assembly. The main latch pin assembly can be biased to oppose the secondary latch piston. The first diameter can be greater than the second diameter. A rocker arm assembly (10) can comprise the latch assembly. A primary arm (100) can be configured to receive the main latch pin assembly. A secondary arm (300) can be configured to receive the secondary latch piston.

Abstract: A rocker arm assembly can include an outer arm having an outer rocker shaft bore configured to receive a rocker shaft and an inner arm having an inner rocker shaft bore configured to receive the rocker shaft. The inner arm can be configured to selectively rotate. A latch pin can be movably seated in the outer arm and configured to move between a latched position and an unlatched position. The rocker arm assembly can further include a lost motion spring. The lost motion spring can include a first end connected to a connecting portion of the inner arm above the inner rocker shaft bore and a second end connected to the outer arm. The inner arm can include an inner arm stop member configured contact with a corresponding outer arm stop member of the outer arm.

Abstract: A switchable rocker arm can comprise a main body configured to rotate around a rocker shaft. The main body can comprise a valve end and a cam end. A second body can comprise a cam-receiving transfer portion and a latch bore through the transfer portion. The cam-receiving transfer portion can include a bearing axle and a roller bearing. A latch assembly including a first latch and a second latch can be mounted in the latch bore.

Abstract: An exhaust valve rocker arm assembly selectively operable in an engine braking mode includes a rocker arm and a valve end configured to selectively act on a valve bridge to engage a first and a second exhaust valve. The valve end includes a brake capsule to selectively extend in a first position to act on the first exhaust valve through the valve bridge. The valve end also includes a lost motion mechanism capable of selectively transmitting motion of the rocker arm to the valve bridge. The lost motion mechanism may integrate a hydraulic lash adjuster in particular embodiments.

Abstract: A switchable rocker arm (1, 2, 3, 4) can comprise a main body (10, 11) configured to rotate around a rocker shaft. The main body can comprise a valve end (102), and a cam end (103) comprising a piston bore (135, 136). A second body (21, 22, 23, 24) can comprise a pivot portion (2140, 2240, 2340, 2440), a cam-receiving transfer portion (2130, 2230, 2330, 2430), and a latch bore (2132) through the transfer portion. A latch assembly (60) can be mounted in the latch bore. A piston assembly (50) can be mounted in the piston bore.

Abstract: A switching roller finger follower (SRFF) for valve actuation includes an outer arm (16), a first inner arm (12), a bearing axle (50) and a latch pin (26). The outer arm (16) is formed of a metal stamping, and is pivotally coupled to a main axle (40). The first inner arm (12) is coupled to the main axle (40) and is pivotably secure to the outer arm. The bearing axle (50) extends through the outer arm and the first inner arm. The bearing axle supports a roller (20) thereon. The latch pin (26) is slidably disposed in the outer arm (16) and is movable between at least a first position where the outer arm (16) and the first inner arm (12) are coupled for concurrent rotation and a second position wherein one of the outer arm and the first inner arm are configured to rotate relative to the other arm.

Abstract: A rocker arm assembly can include a latch assembly, a primary arm configured to receive the latch assembly, and a secondary arm configured to receive the latch assembly. The secondary arm includes a secondary arm body and a piston support ring. A pivot slot passes through the primary arm, the secondary arm body, and the piston support ring.