Continuously variable transmission pump limited stop controls

A continuously variable transmission pump limited stop controls system, comprising:

• a continuously variable transmission (CVT) including:
• a primary variator pulley and a secondary variator pulley;
• each of the primary and the secondary variator pulley having a mating half with a conical face, thereby defining a variable-width gap between each pulley and its mating half;
• a flexible member positioned within the gap and movable on the conical faces to define a CVT ratio;
• a secondary pulley valve controlling flow of a fluid to the secondary variator pulley;
• and
• a secondary pulley pressure boost system identifying if a rapid stop event is occurring and issuing a command to fully open the secondary pulley valve during the rapid stop event;
• wherein as the CVT ratio reaches a predetermined threshold of a desired relaunch ratio during the rapid stop event, an engine speed request is issued to an engine connected to the CVT to increase engine speed.

A continuously variable transmission pump limited stop controls system, comprising:

• a continuously variable transmission (CVT) including:
• a primary variator pulley and a secondary variator pulley each defining a set of pulley members creating a variable-width gap;
• and
• a flexible member positioned within the variable-gap and movable to define a CVT ratio;
• a secondary pulley valve controlling flow of a fluid to the secondary variator pulley;
• a secondary pulley pressure boost system identifying if a rapid stop event is occurring and issuing a command to fully open the secondary pulley valve during the rapid stop event;
• and
• the secondary pulley pressure boost system including:
• a decision module identifying when the rapid stop event is not occurring when a vehicle is decelerating;
• and
• a partial pressure boost module receiving a signal from the decision module when the rapid stop event is not occurring, the partial pressure boost module determining a time to ratio for the vehicle to reach a zero speed.