摘要:
A device is described for controlling a hydraulic accumulator of a hydraulic system, for example a vehicle transmission, having a valve device which may connect and disconnect an accumulator-side port of the device to and from a system-side port, the valve device including at least one valve main stage, which is situated hydraulically between the accumulator-side port and the system-side port and to which a pressure prevailing hydraulically at the accumulator-side port is preferably applied by an application means in the opening direction, the valve device also including an electrically actuated control valve which may connect the system-side port to a control port of the valve main stage which acts in the closing direction of the valve main stage and to the accumulator-side port, at least one first throttle being situated between the control valve and the accumulator-side port.
摘要:
A device is described for controlling a hydraulic accumulator of a hydraulic system, for example a vehicle transmission, having a valve device which may connect and disconnect an accumulator-side port of the device to and from a system-side port, the valve device including at least one first check valve which is situated hydraulically between the accumulator-side port and the system-side port, and which is blocking in the direction of the system-side port, the valve device also including an electrically actuated control valve which is situated between a control port of the first check valve and the accumulator-side port in such a way that the control valve may hydraulically unblock the first check valve, using the pressure prevailing at the accumulator-side port.
摘要:
A device is described for controlling a hydraulic accumulator of a hydraulic system, for example a vehicle transmission, having a valve device which may connect and disconnect an accumulator-side port of the device to and from a system-side port, the valve device including at least one first check valve which is situated hydraulically between the accumulator-side port and the system-side port, and which is blocking in the direction of the system-side port, the valve device also including an electrically actuated control valve which is situated between a control port of the first check valve and the accumulator-side port in such a way that the control valve may hydraulically unblock the first check valve, using the pressure prevailing at the accumulator-side port.
摘要:
A method for assessing an injection behavior of at least one injection valve of an internal combustion engine includes putting the internal combustion engine into a special operating mode defined by control parameters and operating the engine in the special operating mode during a diagnostic time period, at least one operating parameter of the internal combustion engine being determined at least during the diagnostic time period, and at least one quantity characterizing the injection behavior of the at least one injection valve being evaluated at least during a segment of the diagnostic time period and being evaluated on the basis of the at least one operating parameter.
摘要:
In a method for operating an internal combustion engine having multiple combustion chambers and an injector for injecting fuel associated with at least one combustion chamber, an excess air factor which is individual for each combustion chamber is adjusted for the at least one combustion chamber, and a torque which is individual for each combustion chamber is ascertained for the at least one combustion chamber. A control period of the injector is adapted for the injector by ascertaining a valve opening period in such a way that tolerances of the injector are at least essentially compensated for with respect to a relationship between the control period and the valve opening period.
摘要:
A pneumatic tire has a tread, a carcass with belt plies disposed below the tread, and a cap ply layer between the tread and the belt plies of the carcass. The cap ply is a leno weave tape having warp yarn in the longitudinal direction and weft yarns in the weft direction. The leno weave tape is wound in a flat helically wound around the belt plies, and cover with a tread of the tire.
摘要:
This invention relates to an adhesive tape comprising a knitted or woven substrate having weft yarns and a layer of adhesive coated onto the substrate. The substrate is closed to substantially prevent the passage of adhesive through it.
摘要:
A method and an arrangement for operating an internal combustion engine having gasoline direct injection is suggested which includes at least two cylinder banks or cylinder groups. The internal combustion engine is controlled on the basis of at least one input value. In at least one operating state, the input value for one cylinder bank or cylinder group differs from the input value for at least a second cylinder bank or cylinder group.
摘要:
A method and an arrangement for operating a drive unit of a vehicle are suggested. A desired value is preset and an actual value corresponding to the desired value is determined. The desired value is filtered in at least one operating situation. At the start of filtering, the filter is initialized with the determined actual value.
摘要:
A method and an arrangement for controlling an internal combustion engine are suggested wherein a pregiven number of cylinders are shut off for reducing consumption and for reducing toxic substances in predetermined operating conditions. To maintain the torque desired by the driver, a correction of the ignition angle and/or a control of the cylinders to be suppressed is undertaken especially in the transition phase to cylinder shutoff and when switching on the cylinders. This is in addition to a corresponding influencing of the charge.