Adjusting unit for actuating a device for variable control of valves of an internal combustion engine
AssigneeRobert Bosch GmbH
InventorsUdo Sieber, Ulrich Kappenstein
Life of this patent
Estimating the term…
Abstract
An adjusting unit for actuating a device for variable control of valves of an internal combustion engine for load control of the engine via the inlet stroke function of the valves. The adjusting unit includes a gear unit with a cylindrical worm, on whose circumferential surface a thread is embodied. A displacement element that meshes with the thread of the worm is guided displaceably on the worm, and the displacement element is in communication with an actuating element of the device. A drive unit sets the worm into a rotary motion about its longitudinal axis which drives the displacement element.
Claims17
An adjusting unit (1) for actuating a device for variable control of valves of an internal combustion engine for load control of the engine, comprising
- a gear unit (2) with a cylindrical worm (4), a thread (6) is embodied on a circumferential surface of said worm (4), a displacement element (5) is guided displaceably on the worm (4), which displacement element has a profiled region (7) that meshes with the thread (6) of the worm (4), the displacement element (5) is in communication with an actuating element (11) of the device, and
- a drive unit (3), which sets the worm (4) into a rotary motion about a longitudinal axis (9) of the worm,
- wherein the displacement element (5) is embodied as a rack.
An adjusting unit (1) for actuating a device for variable control of valves of an internal combustion engine for load control of the engine, comprising
- a gear unit (2) with a cylindrical worm (4), a thread (6) is embodied on a circumferential surface of said worm (4), a displacement element (5) is guided displaceably on the worm (4), which displacement element has a profiled region (7) that meshes with the thread (6) of the worm (4), the displacement element (5) is in communication with an actuating element (11) of the device, and
- a drive unit (3), which sets the worm (4) into a rotary motion about a longitudinal axis (9) of the worm, and
- wherein the thread (6) of the worm (4) is embodied as a flat thread.
An adjusting unit (1) for actuating a device for variable control of valves of an internal combustion engine for load control of the engine, comprising
- a gear unit (2) with a cylindrical worm (4), a thread (6) is embodied on a circumferential surface of said worm (4), a displacement element (5) is guided displaceably on the worm (4), which displacement element has a profiled region (7) that meshes with the thread (6) of the worm (4), the displacement element (5) is in communication with an actuating element (11) of the device, and
- a drive unit (3), which sets the worm (4) into a rotary motion about a longitudinal axis (9) of the worm, and wherein the displacement element (5) is in communication with the device via a hinge element (10).
An adjusting unit (1) for actuating a device for variable control of valves of an internal combustion engine for load control of the engine, comprising
- a gear unit (2) with a cylindrical worm (4), a thread (6) is embodied on a circumferential surface of said worm (4), a displacement element (5) is guided displaceably on the worm (4), which displacement element has a profiled region (7) that meshes with the thread (6) of the worm (4), the displacement element (5) is in communication with an actuating element (11) of the device, and
- a drive unit (3), which sets the worm (4) into a rotary motion about a longitudinal axis (9) of the worm, and wherein the gear unit (2) has a support frame (13), in which the worm (4) is supported rotatably and the displacement element (5) is supported displaceably, and the end faces of the worm (4) are braced on the support frame (13).
Dependencies are inferred from the claim text.