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AVL - DRIVE AdvancedThe objective tool for driveability assessment and developmentFor effective driveability development AVL started to develop the objective driveability analysis and evaluation tool AVL-DRIVE in 1997. Procedures for the objective assessment of the extremely subjective perception of the driver, have been elaborated in several partially state-subsidised research projects to define the basic evaluation method and formulas. Since then AVL-DRIVE grew up using all experiences acquired out of internal and external vehicle benchmarks and driveability development projects over the past seven years.
The AVL-DRIVE Advanced system is designed for objective analysis and quality control of passenger car characteristics based on human experience.
The system uses various sensors to capture the most significant data and vehicle parameters, such as longitudinal acceleration, engine speed, velocity, pedal position and vibrations. These input quantities are collected by the DMU (DRIVE Main Unit located in the car boot) and passed on to a PC (Notebook) for analysis.
More than 400 individual criteria are defined for several driving modes like load change behaviour, acceleration and gear shifting. All relevant parameters for the defined criteria of all detected driving modes are measured and weighted online during one test ride. The AVL-DRIVE system delivers objective ratings for driveability quality and vehicle character and enables a very quick vehicle analysis. This analysis develops out of the automated classification of all similar driving modes.
For handling researches the AVL-DRIVE analysis method has been extended with the main operation mode “Cornering”. This part consists of 8 sub events for stationary and transient cornering.
The AVL-DRIVE Advanced system is available for vehicles with gear box variants MT, AMT and AT.
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Benefits:- Up to 50% reduction of prototype vehicles for calibration
- Calibration time reducing from weeks to days
- The high number of measured values allows the creation of different calibration characters (brands) for different models
- Early detection on test bed of later on vehicle problems
- Reduction of test vehicles “Road to Rig”
- 10 times faster driveability evaluations
- Common language for test bed and vehicle engineers
- Objective driveability evaluation in the total vehicle development process
- Higher vehicle driveability quality, specific brand vehicle character, higher end-customer satisfaction
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System Features:- Analysing tool for a high number of single parameters for engine, gear box, drive train and vehicle
- Automatic driveability evaluation in real time
- Simulation of driveability experts rating
- Storage of additional engine and vehicle data
Area of Usage:- Objective driveability analysis and evaluation
- Benchmarking for the complete vehicle
- Driveability improvement within the total vehicle development process
- Documentation of the total development process
Applications:- In the vehicle on the road/track
- Chassis dynamometer
- Engine test bed
- Transmission test bed
- Offline simulation
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