F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
138/41.12
F16H 61/42 (2006.01) F16H 61/46 (2006.01)
Patent
CA 1301592
Abstract A method of controlling speed reduction ratio for continuously variable speed transmission comprises a running mode control method which is carried out when an accelerator opening Is opened, an engine brake mode control method which is carried out when said accelerator opening is substantially closed and a transient control method which is carried out over a predetermined period of time when the control is shifted from a state under the engine brake mode control to a state under the running mode control. The transient control method comprises the steps of obtaining a corrected R-REF engine speed immediately after the shift to the running mode control, by adding a difference between the actual engine speed and the R-REF engine speed to the R-REF engine speed set in correspondence to the current accelerator opening, obtaining a further corrected R-REF engine speed during a predetermined period of time following the shift, by adding a correction which is obtained by gradually decreasing the speed difference with time to the R-REF engine speed, and controlling the speed reduction ratio so that the actual engine speed coincides with the corrected R-REF engine speed over the predetermined period of time.
583152
Ishikawa Yoshikazu
Sasajima Koji
Honda Giken Kogyo Kabushiki Kaisha
Marks & Clerk
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