US 12,404,905 B2
Dog clutch control system
Yusuke Kimura, Nisshin (JP); Junji Ute, Nisshin (JP); Hiroya Ando, Nisshin (JP); Shuhei Oe, Nisshin (JP); and Daigo Arakida, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Jan. 17, 2025, as Appl. No. 19/030,584.
Application 19/030,584 is a continuation of application No. PCT/JP2023/030313, filed on Aug. 23, 2023.
Claims priority of application No. 2022-143714 (JP), filed on Sep. 9, 2022.
Prior Publication US 2025/0163977 A1, May 22, 2025
Int. Cl. F16D 48/06 (2006.01)
CPC F16D 48/06 (2013.01) [F16D 2500/10462 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A dog clutch control system comprising:
a dog clutch including:
a first engagement member configured to rotate about an axis in a rotational direction, the first engagement member having first gear teeth formed on an entire circumference of the first engagement member in the rotational direction; and
a second engagement member configured to rotate about the axis in the rotational direction, the second engagement member having second gear teeth formed on an entire circumference of the second engagement member in the rotational direction;
an actuator configured to move at least one of the first engagement member and the second engagement member to switch between an engagement state and a disengagement state, the engagement state being a state where the first engagement member is engaged with the second engagement member through engagement of the first gear teeth and the second gear teeth, the disengagement state being a state where the first engagement member is disengaged from the second engagement member;
a rotational speed detecting unit configured to detect a first rotational speed of the first engagement member and a second rotational speed of the second engagement member;
an arrival timing predicting unit configured to predict an arrival timing at which a rotational speed difference between the first rotational speed and the second rotational speed is adjusted to a value equal to or less than a predetermined threshold during a rotational speed adjustment, the arrival timing being predicted based on the first rotational speed and the second rotational speed detected by the rotational speed detecting unit and a time variation characteristic of the rotational speed difference during the rotational speed adjustment; and
a phase correcting unit configured to perform a phase correction for at least one of the first engagement member and the second engagement member before the arrival timing, wherein
the phase correcting unit is configured to perform the phase correction to bring an engageable timing closer to the arrival timing compared to a case without the phase correction, the engageable timing being a timing after the arrival timing and at which the first engagement member is engageable with the second engagement member.