摘要:
An adjustment device (1) for adjusting the relative rotational angle position of a camshaft (2) in relation to a crankshaft of an internal combustion engine is provided, with the device having an adjustment mechanism (3), which is embodied as a triple-shaft transmission and provided with an input part (4) fixed to the crankshaft, an output part fixed to the camshaft, and an adjusting shaft (7) connected to an adjusting motor shaft (5) of an adjusting motor (6). The motor (6) is provided as an electric motor and is arranged parallel to the camshaft (2). The motor generates an adjustment torque that is transmitted to the adjustment shaft (7) via a secondary drive (18) that has a belt drive, a chain drive, a cardan drive, or an additional spur gear stage.
摘要:
A camshaft adjuster for adjusting the relative angular positions of a camshaft and a crankshaft of an internal combustion engine in accordance with a setting shaft is provided. In which the setting shaft is driven by a setting assembly and has a driving connection with an adjusting gear through a coupling. The drive moment is transmitted in the coupling by a radial extension (21) of a first coupling half (19), which contacts a second coupling half (25) without play in a circumferential direction and which is movable in a direction of a Y-Y axis relative to a second coupling half (25). This permits compensation of eccentricities between the setting shaft of the setting assembly and the adjusting gear.
摘要:
An adjustment device (1) for adjusting the relative rotational angle position of a camshaft (2) in relation to a crankshaft of an internal combustion engine is provided, with the device having an adjustment mechanism (3), which is embodied as a triple-shaft transmission and provided with an input part (4) fixed to the crankshaft, an output part fixed to the camshaft, and an adjusting shaft (7) connected to an adjusting motor shaft (5) of an adjusting motor (6). The motor (6) is provided as an electric motor and is arranged parallel to the camshaft (2). The motor generates an adjustment torque that is transmitted to the adjustment shaft (7) via a secondary drive (18) that has a belt drive, a chain drive, a cardan drive, or an additional spur gear stage.
摘要:
Adjustment device (1) for adjusting a relative rotational angle position of a camshaft (3) relative to a crankshaft of an internal combustion engine is provided. The adjusting device includes a crankshaft-fixed drive part (4) and a camshaft-fixed driven part (5). The adjustment device (1) has an adjustment motor (2) as a primary adjustment device and an auxiliary drive (11) as a secondary adjustment device. When the adjusting motor fails, the camshaft (3) can be moved into a fixed rotational angle position, an emergency running position, by the auxiliary drive (11).
摘要:
A device for varying valve timing in an internal combustion engine comprises an adjusting mechanism for varying an angle of rotation between a drive pinion (2) and a camshaft (end portion of the camshaft 1), said adjusting mechanism being configured as a wobble transmission. The drive pinion (2) comprises a first front-end gearing (9) and a disk (10) comprises a second front-end gearing (11), which first and second front-end gearings mesh partially with each other, and the number of teeth of said front-end gearings differ from each other by at least one tooth. To reduce the overall dimensions of the device and avoid gearing lash, it is proposed, on the one hand, to connect the disk (10) rotationally fast to the camshaft (1) and on the other hand, to configure the disk (10) in axial direction of the camshaft (1) as a flexible element that can be deformed in axial direction by an adjusting device (thrust plate 17).
摘要:
A camshaft adjuster for adjusting the relative angular positions of a camshaft and a crankshaft of an internal combustion engine in accordance with a setting shaft is provided. In which the setting shaft is driven by a setting assembly and has a driving connection with an adjusting gear through a coupling. The drive moment is transmitted in the coupling by a radial extension (21) of a first coupling half (19), which contacts a second coupling half (25) without play in a circumferential direction and which is movable in a direction of a Y-Y axis relative to a second coupling half (25). This permits compensation of eccentricities between the setting shaft of the setting assembly and the adjusting gear.
摘要:
An adjustment device (1) for adjusting the relative rotational angle position of a camshaft (2) in relation to a crankshaft of an internal combustion engine is provided, with the device having an adjustment mechanism (3), which is embodied as a triple-shaft transmission and provided with an input part (4) fixed to the crankshaft, an output part fixed to the camshaft, and an adjusting shaft (7) connected to an adjusting motor shaft (5) of an adjusting motor (6). The motor (6) is provided as an electric motor and is spatially separated from the adjusting shaft (7), and the torque produced thereby is transmitted to the adjusting shaft (7), either mechanically via a flexible shaft (8), pneumatically via a compressor (9) operating a pneumatic motor (13) using pressurized air, or hydraulically via a hydraulic motor (16) and a pump (14) providing the hydraulic medium. The adjusting motor (6) can also be arranged parallel to the adjusting shaft (7) or radially in relation thereto, and the torque is transmitted by toothed gearing or a secondary drive.
摘要:
An adjustment device (1) for adjusting the relative rotational angle position of a camshaft (2) in relation to a crankshaft of an internal combustion engine is provided, with the device having an adjustment mechanism (3), which is embodied as a triple-shaft transmission and provided with an input part (4) fixed to the crankshaft, an output part fixed to the camshaft, and an adjusting shaft (7) connected to an adjusting motor shaft (5) of an adjusting motor (6). The motor (6) is provided as an electric motor and is spatially separated from the adjusting shaft (7), and the torque produced thereby is transmitted to the adjusting shaft (7), either mechanically via a flexible shaft (8), pneumatically via a compressor (9) operating a pneumatic motor (13) using pressurized air, or hydraulically via a hydraulic motor (16) and a pump (14) providing the hydraulic medium. The adjusting motor (6) can also be arranged parallel to the adjusting shaft (7) or radially in relation thereto, and the torque is transmitted by toothed gearing or a secondary drive.
摘要:
An electrical adjusting device for changing an angle of rotation of a camshaft (3) relative to a crankshaft of an internal-combustion engine is provided. The device includes an adjusting gear unit (1), which is formed as a triple-shaft gear unit, including an input part (4) that is fixed to the crankshaft, an output part (5) that is fixed to the camshaft, and an adjusting shaft (6), which is connected in a torsion-proof manner to an electric adjusting motor (2) having a permanent magnet rotor and a stator (8) fixed to the housing. A stationary gear ratio (10), the value of which defines the adjusting gear unit (1) as a positive or negative gear unit and deter-mines whether a direction of adjustment of the camshaft (3, 65, 69) is into an advanced or retarded base position, is located between the input part (4) and the output part (5) when the adjusting shaft is at rest. Due to the configuration of the adjusting gear unit (1), stationary gear ratios are provided, through which an advanced and a retarded base position of the camshaft (3, 65, 69) can be reached exclusively through braking of the adjusting shaft (6) when the adjusting gear unit (1) is rotating, and the braking of the adjusting shaft (6) is carried out through short-circuit braking of the adjusting motor (2).
摘要:
An adjustment device (1) for adjusting the relative rotational angle position of a camshaft (2) in relation to a crankshaft of an internal combustion engine is provided, with the device having an adjustment mechanism (3), which is embodied as a triple-shaft transmission and provided with an input part (4) fixed to the crankshaft, an output part fixed to the camshaft, and an adjusting shaft (7) connected to an adjusting motor shaft (5) of an adjusting motor (6). The motor (6) is provided as an electric motor and is spatially separated from the adjusting shaft (7), and the torque produced thereby is transmitted to the adjusting shaft (7), either mechanically via a flexible shaft (8), pneumatically via a compressor (9) operating a pneumatic motor (13) using pressurized air, or hydraulically via a hydraulic motor (16) and a pump (14) providing the hydraulic medium. The adjusting motor (6) can also be arranged parallel to the adjusting shaft (7) or radially in relation thereto, and the torque is transmitted by toothed gearing or a secondary drive.