Controllable aggregate-drive for internal combustion engines

Claim 2

A controllable aggregate drive for internal combustion engines having a crankshaft, which comprises a controllable Vbelt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crankshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine without the interposition of any control means for controlling the lubricating oil pressure.

Claim 3

An aggregate drive according to claim 1, characterized in that the auxiliary aggregate includes a cooling fan.

Claim 4

An aggregate drive in which the crankshaft is supported by a forward crankshaft main bearing having a lubricating oil bore according to claim 1, characterized in that the lubricating oil bore of the forward crankshaft main bearing is tapped and is operatively connected by way of a central bore with the space accommodating the adjusting piston means.

Claim 5

An aggregate drive with a fixed pulley member according to claim 3, characterized in that the piston means is constructed as plunger piston and is arranged in a central space, and in that the piston means is guided torque-resistant with respect to the relatively fixed pulley member by means of several bolt members substantially uniformly distributed over the circumference.

Claim 6

An aggregate drive according to claim 4, characterized in that the movable pulley member is secured with its hub portion at the end face of the piston means and in that the piston means is guided on several bolt members by slide means, said bolt members being secured in the fixed pulley member.

Claim 7

A controllable aggregate drive for internal combustion engines having a crankshaft supported by a forward crankshaft main bearing having a lubricating oil bore, which comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crankshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, the lubricating oil bore of the forward crankshaft maIn bearing is tapped and is operatively connected by way of a central bore with the space accommodating the adjusting piston means, the piston means is constructed as a plunger piston and is arranged in a central space, and in that the piston means is guided torque-resistant with respect to the relatively fixed pulley member by means of several bolt members substantially uniformly distributed over the circumference, the movable pulley member is secured with its hub portion at the end face of the piston means and in that the piston means is guided on several bolt members by slide means, said bolt members being secured in the fixed pulley member, and in that said slide means are slide bushes, the piston means being guided by said slide bushes on three bolt members.

Claim 8

A controllable aggregate drive for internal combustion engines having a crankshaft supported by a forward crankshaft main bearing having a lubricating oil bore, which comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crankshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, the lubricating oil bore of the forward crankshaft maIn bearing is tapped and is operatively connected by way of a central bore with the space accommodating the adjusting piston means, the piston means is constructed as a plunger piston and is arranged in a central space, and in that the piston means is guided torque-resistant with respect to the relatively fixed pulley member by means of several bolt members substantially uniformly distributed over the circumference, the movable pulley member is secured with its hub portion at the end face of the piston means and in that the piston means is guided on several bolt members by slide means, said bolt members being secured in the fixed pulley member, and in that said slide means are slide bushes, the piston means being guided by said slide bushes on three bolt members.

Claim 9

An aggregate drive according to claim 5, characterized in that coil springs are arranged adjacent the bolt members as return springs which are supported, on the one hand, in dead-end bore means provided in the hub portion of the relatively fixed pulley member and, on the other, in a dead-end bore means of a flange portion at the piston means.

Claim 10

An aggregate drive according to claim 7, characterized in that a torque-dependent means is interconnected into the drive.

Claim 11

A controllable aggregate drive for internal combustion engines having a crankshaft supported by a forward crankshaft main bearing having a lubricating oil bore, which aggregate drive comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crankshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, the lubricating oil bore of the forward crankshaft main bearing is tapped and is operatively connected by way of a central bore with a central space accommodating the piston means, the piston means is constructed as a plunger piston and is arranged in the central space, the piston means is guided torque-resistant with respect to the relatively fixed pulley member by means of several bolt members substantially uniformly distributed over the circumference, the movable pulley member is secured with its hub portion at the end face of the piston means, the piston means is guided on several bolt members by slide means, said bolt members being secured in the fixed pulley member, coil springs are arranged adjacent the bolt members as return springs which are supported, on the one hand, in dead-end bore means provided in the hub portion of the relatively fixed pulley member and, on the other, in a dead-end bore means of a flange portion at the piston means, a torque-dependent means is interconnected into the aggregate drive, and in that additionally a torsion vibration damping means is interconnected into the aggregate drive.

Claim 12

A controllable aggregate drive for internal combustion engines having a crankshaft supported by a forward crankshaft main bearing having a lubricating oil bore, which aggregate drive comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crankshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, the lubricating oil bore of the forward crankshaft main bearing is tapped and is operatively connected by way of a central bore with a central space accommodating the piston means, the piston means is constructed as a plunger piston and is arranged in the central space, the piston means is guided torque-resistant with respect to the relatively fixed pulley member by means of several bolt members substantially uniformly distributed over the circumference, the movable pulley member is secured with its hub portion at the end face of the piston means, the piston means is guided on several bolt members by slide means, said bolt members being secured in the fixed pulley member, coil springs are arranged adjacent the bolt members as return springs which are supported, on the one hand, in dead-end bore means provided in the hub portion of the relatively fixed pulley member and, on the other, in a dead-end bore means of a flange portion at the piston means, a torque-dependent means is interconnected into the aggregate drive, and in that additionally a torsion vibration damping means is interconnected into the aggregate drive.

Claim 13

A controllable aggregate drive for internal combustion engines having a crankshaft supported by a forward crankshaft main bearing having a lubricating oil bore, which aggregate drive comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeDs of the crankshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, the lubricating oil bore of the forward crankshaft main bearing is tapped and is operatively connected by way of a central bore with a central space accommodating the adjusting piston means, the piston means is constructed as a plunger piston and is arranged in the central space, the piston means is guided torque-resistant with respect to the relatively fixed pulley member by means of several bolt members substantially uniformly distributed over the circumference, the movable pulley member is secured with its hub portion at the end face of the piston means and the piston means is guided on several bolt members by slide means, said bolt members being secured in the fixed pulley member, coil springs are arranged adjacent the bolt members as return springs which are supported, on the one hand, in dead-end bore means provided in the hub portion of the relatively fixed pulley member and, on the other, in a dead-end bore means of a flange portion at the piston means, and in that the driving hub portion is connected with a drum portion by way of a flange member, said drum portion accommodating therein a torsional vibration damper means, at the output of which are arranged several inwardly projecting roller means which cooperate with inclined curved surface means provided in the piston flange portion.

Claim 14

A controllable aggregate drive for internal combustion engines having a crankshaft supported by a forward crankshaft main bearing having a lubricating oil bore, which aggregate drive comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeDs of the crankshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, the lubricating oil bore of the forward crankshaft main bearing is tapped and is operatively connected by way of a central bore with a central space accommodating the adjusting piston means, the piston means is constructed as a plunger piston and is arranged in the central space, the piston means is guided torque-resistant with respect to the relatively fixed pulley member by means of several bolt members substantially uniformly distributed over the circumference, the movable pulley member is secured with its hub portion at the end face of the piston means and the piston means is guided on several bolt members by slide means, said bolt members being secured in the fixed pulley member, coil springs are arranged adjacent the bolt members as return springs which are supported, on the one hand, in dead-end bore means provided in the hub portion of the relatively fixed pulley member and, on the other, in a dead-end bore means of a flange portion at the piston means, and in that the driving hub portion is connected with a drum portion by way of a flange member, said drum portion accommodating therein a torsional vibration damper means, at the output of which are arranged several inwardly projecting roller means which cooperate with inclined curved surface means provided in the piston flange portion.

Claim 15

An aggregate drive according to claim 10, characterized in that three roller means are arranged at the output of the torsional vibration damping means.

Claim 16

An aggregate drive according to claim 10, characterized in that the drum portion is rotatably but axially non-displaceably supported on the fixed pulley member and the output of the torsional vibration damping means is axially supported on the fixed pulley member.

Claim 17

An aggregate drive according to claim 4, characterized in that the piston means includes three axially parallel bolt members distributed substantially uniformly over the circumference which are guided in corresponding bores of the fixed pulley member and are operatively connected with the axially movable pulley member.

Claim 18

A controllable aggregate drive for internal combustion engines having a crankshaft supported by a forward crankshaft main bearing having a lubricating oil bore, which aggregate drive comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crankshaft the speed increase transmission ration is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, the lubricating oil bore of the forward crankshaft main bearing is tapped and is operatively connected by way of a central bore with a central space accommodating the piston means, the piston means is constructed as a plunger piston and is arranged in the central space, the piston means is guided torque-resistant with respect to the relatively fixed pulley member by means of several bolt members substantially uniformly distributed over the circumference, the piston means includes three axially parallel bolt members distributed substantially uniformly over the circumference which are guided in corresponding bores of the fixed pulley member and are operatively connected with the axially movable pulley member, and in that the driving hub portion is connected by a flange member with a drum portion formed directly by the fixed pulley member and in that the fixed pulley member is connected inwardly thereof with a hollow hub portion on which is supported the axially movable pulley member.

Claim 19

A controllable aggregate drive for internal combustion engines having a crankshaft supported by a forward crankshaft main bearing having a lubricating oil bore, which aggregate drive comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crankshaft the speed increase transmission ration is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, the lubricating oil bore of the forward crankshaft main bearing is tapped and is operatively connected by way of a central bore with a central space accommodating the piston means, the piston means is constructed as a plunger piston and is arranged in the central space, the piston means is guided torque-resistant with respect to the relatively fixed pulley member by means of several bolt members substantially uniformly distributed over the circumference, the piston means includes three axially parallel bolt members distributed substantially uniformly over the circumference which are guided in corresponding bores of the fixed pulley member and are operatively connected with the axially movable pulley member, and in that the driving hub portion is connected by a flange member with a drum portion formed directly by the fixed pulley member and in that the fixed pulley member is connected inwardly thereof with a hollow hub portion on which is supported the axially movable pulley member.

Claim 20

An aggregate drive according to claim 14, characterized in that an abutment means for a return spring acting on the axially movable pulley member is arranged on the hollow hub portion.

Claim 21

An aggregate drive according to claim 15, characterized in that the return spring constructed as cup spring serves simultaneously for the transmission of torque and engages at the inner and outer circumference by means of projections in corresponding apertures at the abutment means and at the outer circumference of the movable pulley member.

Claim 22

An aggregate drive with a fixed pulley member according to claim 1, characterized in that the piston means is constructed as plunger piston and is arranged in a central space, and in that the piston means is guided torque-resistant with respect to the relatively fixed pulley member by means of several bolt members substantially uniformly distributed over the circumference.

Claim 23

An aggregate drive with a fixed pulley member according to claim 1, characterized in that the movable pulley member is secured with its hub portion at the end face of the piston means and in that the piston means is guided on several bolt members by slide means, said bolt members being secured in the fixed pulley member.

Claim 24

An aggregate drive according to claim 18, characterized in that said slide means are slide bushes, the piston means being guided by said slide bushes on three bolt members.

Claim 25

An aggregate drive according to claim 18, characterized in that coil springs are arranged adjacent the bolt members as return springs which are supported, on the one hand, in dead-end bore means provided in the hub portion of the relatively fixed pulley member and, on the other, in a dead-end bore means of a flange portion at the piston means.

Claim 26

An aggregate drive according to claim 1, characterized in that a torque-dependent means is interconnected into the drive.

Claim 27

A controllable aggregate drive for internal combustion engines having a crankshaft, which comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crankshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, and in that additionally a torsion vibration damping means is interconnected into the aggregate drive.

Claim 28

A controllable aggregate drive for internal combustion engines having a crankshaft, which comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crankshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, and in that additionally a torsion vibration damping means is interconnected into the aggregate drive.

Claim 29

A controllable aggregate drive for internal combustion engines having a crankshaft, which comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crAnkshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, and in that a driving hub portion is connected with a drum portion by way of a flange member, said drum portion accommodating therein a torsional vibration damper means, at the output of which are arranged several inwardly projecting roller means which cooperate with inclined curved surface means provided in the piston flange portion.

Claim 30

A controllable aggregate drive for internal combustion engines having a crankshaft, which comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crAnkshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, and in that a driving hub portion is connected with a drum portion by way of a flange member, said drum portion accommodating therein a torsional vibration damper means, at the output of which are arranged several inwardly projecting roller means which cooperate with inclined curved surface means provided in the piston flange portion.

Claim 31

An aggregate drive according to claim 23, characterized in that three roller means are arranged at the output of the torsional vibration damping means.

Claim 32

An aggregate drive according to claim 23, characterized in that the drum portion is rotatably but axially non-displaceably supported on the fixed pulley member and the output of the torsional vibration damping means is axially supported on the fixed pulley member.

Claim 33

An aggregate drive with a fixed pulley member according to claim 1, characterized in that the piston means includes three axially parallel bolt members distributed substantially uniformly over the circumference which are guided in corresponding bores of the fixed pulley member and are operatively connected with the axially movable pulley member.

Claim 34

A controllable aggregate drive with a fixed pulley member for internal combustion engines having a crankshaft which comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crankshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, and in that the driving hub portion is connected by a flange member with a drum portion formed directly by the fixed pulley member and in that the fixed pulley member is connected inwardly thereof with a hollow hub portion on which is supported the axially movable pulley member.

Claim 35

A controllable aggregate drive with a fixed pulley member for internal combustion engines having a crankshaft which comprises a controllable V-belt transmission means for driving at least one auxiliary aggregate from said crankshaft including a driving pulley means having a movable pulley member, and means controlling the transmission ratio of said V-belt transmission means in such a manner that at low rotational speeds of the crankshaft a transmission with a speed increase results and with increasing rotational speeds of the crankshaft the speed increase transmission ratio is automatically reduced, including a piston means acted upon by a pressure medium, said piston means being operatively connected with the driving pulley means of the V-belt transmission means and displacing against spring action the movable pulley member thereof, characterized in that the piston means is acted upon directly by the lubricating oil pressure of the internal combustion engine, and in that the driving hub portion is connected by a flange member with a drum portion formed directly by the fixed pulley member and in that the fixed pulley member is connected inwardly thereof with a hollow hub portion on which is supported the axially movable pulley member.

Claim 36

An aggregate drive according to claim 27, characterized in that an abutment means for a return spring acting on the axially movable pulley member is arranged on the hollow hub portion.

Claim 37

An aggregate drive according to claim 28, characterized in that the return spring constructed as cup spring serves simultaneously for the transmission of torque and engages at the inner and outer circumference by means of projections in corresponding apertures at the abutment means and at the outer circumference of the movable pulley member.

Claim 38

A controllable aggregate drive for an internal combustion engine having a lubricating oil system communicating with a lubricating bore means provided in a crankshaft, the aggregate drive comprising: transmission means for driving at least one auxiliary aggregate from the crankshaft including a driving pulley means and a movable pulley means; and means for controlling the transmission ratio of said transmission means including a pressure space means, a piston means connected with said driving pulley means disposed in said pressure space means, and means for permitting direct and substantially uninterrupted communication between the lubricating bore meAns in the crankshaft and said pressure space means whereby said piston means is acted upon directly by the lubricating oil pressure, which lubricating oil pressure reflects the actual rotational speed of the internal combustion engine.

Claim 39

A controllable aggregate drive for an internal combustion engine having a lubricating oil system communicating with a lubricating bore means provided in a crankshaft, the aggregate drive comprising: transmission means for driving at least one auxiliary aggregate from the crankshaft including a driving pulley means and a movable pulley means; and means for controlling the transmission ratio of said transmission means including a pressure space means, a piston means connected with said driving pulley means disposed in said pressure space means, and means for permitting direct and substantially uninterrupted communication between the lubricating bore meAns in the crankshaft and said pressure space means whereby said piston means is acted upon directly by the lubricating oil pressure, which lubricating oil pressure reflects the actual rotational speed of the internal combustion engine.