Automatic clutch control system

Details Automatic clutch control system Automatic clutch control system

1982-03-12

1985-05-21

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0076, 192 0092, B60K 4128

Patent

active

045180687

ABSTRACT:
System is provided for controlling the pressure with which a clutch is engaged, with a slip rate e of the clutch, which is equal to the ratio of the rotational speed of a drive shaft thereof, as a main parameter. A microprocessor reads a throttle opening and the slip rate e from the initiation of engagement of the clutch at a time interval of 0.4 sec, and accesses a particular group of controlling data which control the clutch engagement and which are grouped together as a function of a time lapse l as well as the read values of these parameters. During the interval of 0.4 sec, the microprocessor sequentially outputs the controlling data of the particular group with a time subinterval of 0.05 sec. The time interval includes subintervals corresponding to l=0 to l=8 at maximum, from the initiation to the completion of the clutch engagement. Each subinterval l=0 to l=8 spans 0.4 sec. When a temporary clutch activation is instructed, the microprocessor changes the length of the subinterval from 0.05 to 0.1 sec, and also changes the time interval l to 0.8 sec. When the slip rate e is low at the initiation of the clutch engagement, a group of controlling data is selected which is to be assigned to a first subinterval l=0 corresponding to the deceleration of the clutch drive shaft.

REFERENCES:
patent: 3752284 (1973-08-01), Brittain et al.
patent: 4019614 (1977-04-01), Prenzel et al.
patent: 4107776 (1978-08-01), Beale
patent: 4244244 (1981-01-01), Rembold et al.
patent: 4291594 (1981-09-01), Baudoin
patent: 4386687 (1983-06-01), Chevalier et al.
patent: 4393467 (1983-07-01), Miki et al.

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