4WD Chassis Dynamometer
Precision Testing for All-Wheel Drive Vehicles – Validate performance, efficiency & durability
Our advanced 4WD chassis dynamometer provides precise control of vehicle operating conditions, enabling repeatable measurements under simulated real-world driving scenarios. The system supports standardized and customized driving cycles, including dynamic load profiles and variable gradients, while maintaining tightly controlled ambient conditions.
"Reliable validation of modern powertrains depends on the ability to generate consistent and reproducible data across a wide range of operating conditions – whether in driver-in-the-loop scenarios or fully automated testing environments."
Stefan Schnörch
Manager, Vehicle Function & Testing
Why is a 4WD chassis dynamometer essential for testing modern powertrains?
Increasing drivetrain complexity
AWD, hybrid and electric systems require coordinated, system-level validation.Synchronized axle operation
Front and rear axles must run in sync to ensure accurate and damage-free testing.Limitations of conventional testing
2WD systems cannot realistically represent multi-axle vehicle behavior.Reproducible and controlled conditions
Consistent environments are essential for reliable and comparable test results.Validation of advanced control systems
Functions like torque vectoring and traction control need integrated testing setups.Our Services at a Glance
Our system combines high-performance dynamometer specifications with advanced measurement and testing capabilities for comprehensive drivetrain validation.
Dynamometer Specifications
- Roller diameter: 48”
- 4 single wheel drives: 4 x 250 KW
- Maximum vehicle speed: 260 km/h
- Max. drag force: 12.000 N / axle
- Flexible wheelbase from: 2.0 - 4.4m
- Vertical load per axle: 4.500kg
Air Stream Simulation
- Maximum airflow: 140.000 m3/h
- Variable outlet: 0,54 … 1,8m2
- Temperature condition: -15°C up to 50°C
NVH Test Cell
- Free field from: 40Hz to 10KHz
- Cell dimensions (l x b x h): 12 x 8,3 x 4,5m
Test Bench Setup
Control system
- KS Tornado
- T-SIM Modell (Simlink)
- KS ADAC (Frequency 2 kHz)
Electric propulsion
- 4 x asynchronous machine with 250 kW
- ABB ACS800 Frequency Converter
Sensors
- Torque flange: 4 x HBM, Typ T10F, 5 kNm
- Speed sensor: 8 x Leine Linde RSI-504
- 10.000 Impulse/sec
What are the key benefits of 4WD Chassis Dyno Testing?
Faster development cycles
Accelerates validation and reduces time-to-market.Lower testing costs
Minimizes the need for complex and expensive road testing.High measurement accuracy
Ensures precise and reliable test data.Efficient calibration and optimization
Supports rapid tuning of performance and efficiency.Flexible and controlled testing
Enables a wide range of scenarios independent of external conditions.Typical Testing Applications
The 4WD chassis dynamometer enables a wide range of testing applications across modern vehicle development:
Energy & Thermal Management
Evaluation of energy flows, efficiency, and thermal behavior of powertrain and vehicle systems.
Acoustics & Vibration (NVH)
Analysis and optimization of noise, vibration, and harshness behavior under defined operating conditions.
FAQs - About 4WD Chassis Dynamometer
What types of vehicles can be tested on a 4WD chassis dynamometer?
A 4WD chassis dynamometer supports passenger cars, SUVs and light-duty vehicles with all-wheel, hybrid, or fully electric drivetrains, thanks to flexible wheelbase and load configurations.
Can real-world driving conditions be realistically simulated?
Yes, the system accurately simulates road loads, gradients and standardized as well as custom driving cycles under controlled laboratory conditions.
What types of tests can be performed on a 4WD chassis dynamometer?
The 4WD chassis dynamometer supports a wide range of applications, including performance testing (power, torque, acceleration), energy consumption and range analysis, drivability and calibration, as well as thermal management. It also enables validation of all-wheel drive functionality, realistic road load simulation and durability or stress testing under controlled conditions.
How is test repeatability ensured during chassis dynamometer testing?
Repeatability is achieved through synchronized axle control, controlled ambient conditions, and the use of automation tools such as driving robots, eliminating driver influence.
Is the system suitable for automated testing and advanced development tasks?
Absolutely, modern 4WD chassis dynamometers support fully automated testing, integration with measurement systems, and advanced applications such as function development, calibration and system validation.
