Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
262 words
An actuating device for a throttle valve rotatably supported in an intake tube of an internal combustion engine and intended for controlling an aspirated air quantity flowing therethrough comprising said throttle valve being connected to a throttle valve shaft and being actuatable in a damped manner via an actuating lever by a throttle control means, counter to a force applied by at least one restoring spring, said actuating lever being supported rotatably with respect to said throttle valve shaft and being arranged to engage an intermediate lever by means of a helically-embodied follow-up drawing spring, said intermediate lever being rotatably supported with respect to the throttle valve shaft to act upon a throttle valve lever connected to said throttle valve shaft, the intermediate lever being connected to a cam disk provided with a curved camming surface, rotational motion of said intermediate lever being damped by an associated damper element, said throttle valve lever being engaged by an electromagnetically actuatable idling actuator in an opening direction of the throttle valve, said throttle valve lever being connected to one end of at least one helically-embodied uncoupling spring, said uncoupling spring further secured at the other end to the intermediate lever, said throttle valve lever being drawn by said uncoupling spring against a coupling stop on the intermediate lever, whereby when the intermediate lever is adjusted out of the idling position in an opening direction of the throttle valve, a greater damping action is produced than when the intermediate lever is adjusted out of a partial-load position in the opening direction of the throttle valve.
Claim 2
Dependent Claim
262 words
An actuating device for a throttle valve rotatably supported in an intake tube of an internal combustion engine and intended for controlling an aspirated air quantity flowing therethrough comprising said throttle valve being connected to a throttle valve shaft and being actuatable in a damped manner via an actuating lever by a throttle control means, counter to a force applied by at least one restoring spring, said actuating lever being supported rotatably with respect to said throttle valve shaft and being arranged to engage an intermediate lever by means of a helically-embodied follow-up drawing spring, said intermediate lever being rotatably supported with respect to the throttle valve shaft to act upon a throttle valve lever connected to said throttle valve shaft, the intermediate lever being connected to a cam disk provided with a curved camming surface, rotational motion of said intermediate lever being damped by an associated damper element, said throttle valve lever being engaged by an electromagnetically actuatable idling actuator in an opening direction of the throttle valve, said throttle valve lever being connected to one end of at least one helically-embodied uncoupling spring, said uncoupling spring further secured at the other end to the intermediate lever, said throttle valve lever being drawn by said uncoupling spring against a coupling stop on the intermediate lever, whereby when the intermediate lever is adjusted out of the idling position in an opening direction of the throttle valve, a greater damping action is produced than when the intermediate lever is adjusted out of a partial-load position in the opening direction of the throttle valve.
Claim 3
Dependent Claim
41 words
The actuating device defined by claim 1, further wherein a moment of force exerted upon the intermediate lever by said at least one uncoupling spring is greater than a moment of force exerted upon the actuating lever by the restoring spring.
Claim 4
Dependent Claim
46 words
The actuating device defined by claim 1, further wherein the damper element is connected to a lever arm adapted to said curved camming surface of the cam disk attached to the intermediate lever, whereby a damping action can be applied to movement of said intermediate lever.