Back to Overview

Automatic Transmission Oil Pumps

Custom-engineered oil pump systems for automatic transmissions. Designed for stable hydraulic pressure, reliable lubrication, cooling flow, and smooth shift performance across demanding operating conditions.

Automatic Transmission Pumps

Stable Line Pressure

Reliable hydraulic supply for shifting circuits

Torque Converter Support

Oil flow for converter and cooling demand

Low Pulsation

Smooth pressure delivery for shift quality

A/T-Specific Design

Adapted to automatic transmission layouts

Typical applications for automatic transmission oil pumps

Where TPV engineering supports hydraulic pressure supply, lubrication, cooling, and shift quality in automatic transmission systems.

Line Pressure Supply

Reliable oil pressure for hydraulic control units, clutch packs, brakes, and shift elements in modern automatic transmissions.

Torque Converter & Cooling Flow

Oil delivery for torque converter operation, heat management, lubrication paths, and temperature-critical A/T operating conditions.

Shift Quality & Pressure Control

Low pulsation and stable pressure behavior for smoother shift events, reduced hydraulic fluctuation, and improved drivability.

A/T System Integration

We adapt pump architecture, gear set, housing, and hydraulic interfaces to the automatic transmission layout, pressure strategy, and available installation space.

Hydraulic Control Integration

Pump concepts developed around line pressure, control valve requirements, clutch and brake actuation, lubrication paths, and cooling flow.

Transmission Housing Integration

Integrated into compact automatic transmission housings with attention to suction path, drive interface, mounting position, and oil routing.

Why choose Automatic Transmission Oil Pumps?

Automatic transmission oil pumps must deliver reliable pressure for hydraulic actuation, lubrication, converter operation, and cooling while meeting strict NVH and packaging targets.

Reliable Line Pressure

Stable hydraulic supply for shift elements, clutch packs, brakes, torque converter circuits, and control systems.

Shift Quality Support

Low pulsation and controlled pressure behavior to support smooth shift events and predictable hydraulic response.

A/T-Specific Packaging

Pump concepts adapted to automatic transmission housing, suction path, drive interface, and oil circuit constraints.

Core Technology

Duocentric-IC Gearing

Trochocentric-developed gearing for automatic transmission oil pump systems. Designed to support low pulsation, high volumetric efficiency, and stable hydraulic supply for pressure-sensitive A/T circuits.

Trochocentric Developed

Optimized clearances & Roll-off

Standard Gerotor

Higher Pulsation & Wear

  • Low pressure pulsation for smooth automatic transmission hydraulics
  • Reduced leakage gaps for improved volumetric efficiency
  • Smoother tooth engagement for lower NVH emission
  • Suitable for torque-converter automatic transmission oil pump concepts
Deep Dive: Trochocentric Tech
Duocentric-IC Technology

Key Performance Targets for Automatic Transmission Oil Pumps

Low Noise / NVH Targets

Reduce pump-related noise, structure-borne vibration, and gear excitation in acoustically sensitive automatic transmission systems.

Improve NVH

Stable Pressure for Shift Events

Maintain stable hydraulic pressure during gear changes, converter operation, temperature changes, and load transitions.

Stabilize Pressure

More Flow in the Same Package

Increase hydraulic performance for pressure, converter, lubrication, and cooling demand without expanding the pump envelope.

Optimize Packaging

Controlled Relief Valve Behavior

Reduce pressure oscillation and improve regulation behavior during cold start, warm-up, converter operation, and dynamic shifting.

Improve Regulation
How it works

From requirements to validated prototypes

A clear workflow tailored to your application, covering concept development, simulation, prototyping, validation testing, and series ramp-up with production partners.

development process
Learn more about our Development Process
1

Requirements

Kick-off & application review

Output:

Requirement specification + application targets

2

Concept

System layout & gear set design

Output:

3D design + initial drawings

3

Simulation

Hydraulic calculations & CFD

Output:

Hydraulic performance data + simulation results

4

Prototyping

Prototype manufacturing

Output:

Functional prototypes for test bench validation

5

Validation

Prototype test rig optimization

Output:

Validated pump system ready for production preparation

✓

Series

Ramp-up with production partners

Output:

Series-ready production setup with established partners

Validated Quality

Every prototype is optimized on our prototype test rig for hydraulic stability, low pressure pulsation, low noise behavior, and reliable flow delivery. Automatic transmission oil pump prototypes are typically available within 3–4 months after design freeze and are 100% tested with full test reports.

Prototype test rig optimization
100% tested with test reports
Typical prototype lead time: 3–4 months after design freeze

FAQs

Quick answers to practical engineering questions about automatic transmission oil pump development, pressure supply, shift quality, NVH, and integration into A/T hydraulic systems.

Typical challenges include stable line pressure, low pulsation during shift events, sufficient converter and cooling flow, reduced NVH, reliable cold-start behavior, and integration into tight transmission housing constraints.

The pump is not the only factor, but pressure pulsation, hydraulic stability, and response behavior can influence shift feel. TPV optimizes gear geometry, flow delivery, and pressure behavior to support smoother hydraulic control.

Often, yes. TPV can evaluate the existing envelope, gear set, suction path, leakage gaps, and pressure behavior to identify improvements within fixed housing and interface constraints.

Useful inputs include line pressure targets, flow demand, speed range, oil temperature range, torque converter requirements, hydraulic circuit layout, packaging envelope, drive interface, and NVH or pulsation limits.

Prototype systems can be tested for flow delivery, pressure stability, pulsation, noise behavior, leakage, power consumption, and relief valve response before series preparation.

Ideally before the pump envelope, suction path, and hydraulic interfaces are frozen. Early involvement helps optimize pressure behavior, packaging, NVH, and manufacturability before major constraints are locked.

Back To Top