What is PD ISO/PAS 5101 about?
PD ISO/PAS 5101 specifies expected field loads for functions provided by the braking system actuator and modulator and applies to passenger cars and light commercial vehicles (classes M1 and N1, according to UNECE).
Functions addressed in PD ISO/PAS 5101 are:
- Dynamic stability functions (e.g., electronic stability control)
- Brake torque optimizing functions (e.g., electronic brake force distribution)
- Brake assistance functions (e.g., hill start assist)
By describing the expected field loads, PD ISO/PAS 5101 specifies representative manoeuvres and occurrences for different functions. These serve as an orientation for the derivation of test procedures.
PD ISO/PAS 5101 applies to vehicles up to conditional automation (SAE J 3016 level 3) with a maximum of 30 % automated brake operations.
Note- PD ISO/PAS 5101 only covers functions where data of appropriate maturity are available. There are additional functions of a braking system, which are not covered by PD ISO/PAS 5101.
Who is PD ISO/PAS 5101 for?
PD ISO/PAS 5101 on field load specification for brake actuation and modulation systems is useful for:
- Passenger cars and light commercial vehicle manufacturers
- Passenger cars and light commercial vehicle braking system manufacturers and suppliers
- Vehicle repair shops
- Vehicle certification agencies
- Vehicle regulatory authorities
Why should you use PD ISO/PAS 5101?
Vehicle development programs tend to grow in complexity and integration of the braking system with chassis dynamics and mechatronics, demanding more robust and comprehensive evaluation programs. Also, to remain competitive, braking systems and their components’ functionality and application across multiple vehicle architectures and platforms are increased.
The proper selection and adaptation of field load spectra and profiles to the specific program ensure functionality, reliability and braking system availability. PD ISO/PAS 5101 defines a library of field load schedules to help developing simulation and testing programs tailored to the vehicle or system specification and requirements. Specific cycles and load collectives including the main functions associated with everyday driving and operation and exceptional load cases are described in PD ISO/PAS 5101 to ensure safe braking behavior.
PD ISO/PAS 5101 field load was typically derived from analyzing field data collected from almost 1 million vehicles having driven more than 45 billion km. Several vehicle and brake system suppliers from vehicles used in different regions worldwide contributed to this field data collection. PD ISO/PAS 5101 provides field loads independent of the vehicle technology, vehicle specification, intended use and field usage. PD ISO/PAS 5101 specifies expected field loads for functions dynamic stability functions, brake torque optimizing functions and brake assistance functions.
