How does the Torque Converter in the automatic transmission work?⚡Electric & Hybrid Vehicle Repairs⚡

Structure and Operation of Torque Converter

This section delves into the structure and operation of the torque converter, highlighting its functions, modes of operation, common symptoms of defects, diagnostic procedures, and repair processes.

Functions of Torque Converter

• The torque converter acts as a fluid coupling between the engine and transmission.

• It increases torque from the engine to the transmission during vehicle movement.

• Operates the oil pump in the gearbox.

• Helps neutralize fluctuations and vibrations from the engine to ensure smooth gear changing.

Hydraulic Control and Lubrication

• Transmission oil enters through openings in different shafts for hydraulic control.

• Participates in hydraulic control regulated by pressure from mechatronic.

• Provides lubrication for moving components.

Modes of Operation

• Two modes: torque converter mode and lock-up mode.

• In torque converter mode, connection between transmission and engine is fluid flow pressure-based.

Diagnosis and Repair Procedures

This section focuses on diagnosing issues with torque converters, maintenance procedures, potential causes of problems, and repair processes involved.

Symptoms of Defects

• Common signs include constant or periodic vibrations and noises from gearbox position.

• Difficulty starting off may indicate damaged mechanical components in the torque converter.

Diagnostic Process

• Upon arrival for repair, a glycol test is conducted followed by oil drainage using specialized equipment.

• Components are disassembled to check for wear, balance deviations, axis alignment issues.

Causes of Problems

• Issues can arise from incorrect engagement or imbalance of friction mechanisms.

Detailed Process of Torque Converter Rebuilding

This section outlines the meticulous process involved in rebuilding a torque converter, emphasizing the importance of precision and accuracy in measurements.

Rebuilding Process

• The rebuilt torque converter undergoes a thorough inspection where clearance and tension are meticulously checked against reference values.

• If all measurements align with the specified reference values, the torque converter is marked for further processing.

• Results from the inspection are diligently recorded in a digital database for documentation and tracking purposes.

• Once approved, the rebuilt torque converter can be reassembled into the automatic gearbox or prepared for delivery to customers.