Which device is responsible for directing hydraulic fluid to apply the transmission clutches for different ranges?

Which device is responsible for directing hydraulic fluid to apply the transmission clutches for different ranges?

• A. Converters
• B. Solenoids
• C. Accumulators
• D. Regulators

Answer: (B)

Solenoids are the electronically controlled valves inside the transmission that route hydraulic fluid to the clutch circuits for each gear range. When the control system commands a shift, the solenoids open the appropriate pathways, directing pressurized fluid to the clutch packs that must be engaged for that range. This selective fluid routing is what makes different gear ratios possible. Torque converters simply connect and transmit torque between engine and trans, and sometimes lock up, but they don’t direct hydraulic fluid to clutches. Accumulators store and damp hydraulic pressure, and regulators set overall system pressure; neither selectively directs fluid to clutches for different ranges.

Solenoids are the electronically controlled valves inside the transmission that route hydraulic fluid to the clutch circuits for each gear range. When the control system commands a shift, the solenoids open the appropriate pathways, directing pressurized fluid to the clutch packs that must be engaged for that range. This selective fluid routing is what makes different gear ratios possible.

Torque converters simply connect and transmit torque between engine and trans, and sometimes lock up, but they don’t direct hydraulic fluid to clutches. Accumulators store and damp hydraulic pressure, and regulators set overall system pressure; neither selectively directs fluid to clutches for different ranges.