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ENCAP 车对车AEB/FCW测试标准
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更新于2023-03-16
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ENCAP 针对于AEB/FCE功能的新车评价标准程序,包括了测试条件的规定和试验执行。
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EUROPEAN NEW CAR ASSESSMENT PROGRAMME
(Euro NCAP)
TEST PROTOCOL – AEB systems
Version 2.0.1
November 2017
Version 2.0.1
November 2017
Version 2.0.1
November 2017
EUROPEAN NEW CAR ASSESSMENT PROGRAMME (Euro NCAP)
TEST PROTOCOL – AEB SYSTEMS
Table of Contents
1 INTRODUCTION ............................................................................................................... 1
2 DEFINITIONS.................................................................................................................... 2
3 REFERENCE SYSTEM...................................................................................................... 4
4 MEASURING EQUIPMENT .............................................................................................. 6
5 GLOBAL VEHICLE TARGET ........................................................................................... 8
6 MANUFACTURER DATA ................................................................................................. 9
7 TEST CONDITIONS ........................................................................................................ 11
8 TEST PROCEDURE ......................................................................................................... 15
ANNEX A BRAKE APPLICATION PROCEDURE ........................................................... 20
A.1 Definitions ..................................................................................................................... 20
A.2 Measurements ................................................................................................................ 20
A.3 Brake Characterization Procedure ................................................................................ 20
A.3.1 Brake Displacement Characterisation Tests .............................................................. 20
A.3.2 Brake Force Confirmation and Iteration Procedure ................................................. 21
A.4 Brake Application Profile .............................................................................................. 22
Version 2.0.1
November 2017
1
1 INTRODUCTION
Car-to-car rear impacts are one of the most frequent accidents happening on the roads
due to driver distraction or misjudgement.
Typical accidents during city driving are normally occurring at relatively low speeds
where the impacted car is already at standstill, but with a high risk of a debilitating
whiplash injury to the driver of the struck vehicle. While injury severities are usually
low, these accidents are very frequent and represent over a quarter of all crashes.
Similar accident scenarios occur on the open road, at moderate to higher speeds, where
a driver might be distracted and may fail to recognise that the traffic in front of him is
stopped, coming to a stop or is driving at a lower speed.
To support the driver in avoiding such nose to tail crashes, car manufactures offer
avoidance technology that warns, supports adequate braking and/or ultimately stops the
vehicle by itself. Systems that work mostly at lower speed are referred to as AEB City
systems, those that function at higher speeds, AEB Inter-Urban systems.
This protocol specifies the AEB City and AEB Inter-Urban test procedures, which are
part of the Adult Occupant Protection and the Safety Assist assessment, respectively.
For AEB City, only the CCRs scenario is applicable where the AEB functionality at
lower speed is tested. To be eligible to score points for AEB City, a good Whiplash
score must be achieved for the front seat.
For AEB Inter-Urban, the system is tested in three scenarios (CCRs, CCRm and CCRb).
For this type of AEB system, both the AEB and FCW functionality is assessed.
Version 2.0.1
November 2017
2
2 DEFINITIONS
Throughout this protocol the following terms are used:
Peak Braking Coefficient (PBC) – the measure of tyre to road surface friction based
on the maximum deceleration of a rolling tyre, measured using the American Society
for Testing and Materials (ASTM) E1136-10 (2010) standard reference test tyre, in
accordance with ASTM Method E 1337-90 (reapproved 1996), at a speed of 64.4km/h,
without water delivery.
Autonomous Emergency Braking (AEB) – braking that is applied automatically by
the vehicle in response to the detection of a likely collision to reduce the vehicle speed
and potentially avoid the collision.
Forward Collision Warning (FCW) – an audiovisual warning that is provided
automatically by the vehicle in response to the detection of a likely collision to alert the
driver.
Dynamic Brake Support (DBS) – a system that further amplifies the driver braking
demand in response to the detection of a likely collision to achieve a greater deceleration
than would otherwise be achieved for the braking demand in normal driving conditions.
Car-to-Car Rear Stationary (CCRs) – a collision in which a vehicle travels forwards
towards another stationary vehicle and the frontal structure of the vehicle strikes the
rear structure of the other.
Car-to-Car Rear Moving (CCRm) – a collision in which a vehicle travels forwards
towards another vehicle that is travelling at constant speed and the frontal structure of
the vehicle strikes the rear structure of the other.
Car-to-Car Rear Braking (CCRb) – a collision in which a vehicle travels forwards
towards another vehicle that is travelling at constant speed and then decelerates, and the
frontal structure of the vehicle strikes the rear structure of the other.
Vehicle under test (VUT) – means the vehicle tested according to this protocol with a
pre-crash collision mitigation or avoidance system on board
Vehicle width – the widest point of the vehicle ignoring the rear-view mirrors, side
marker lamps, tyre pressure indicators, direction indicator lamps, position lamps,
flexible mud-guards and the deflected part of the tyre side-walls immediately above the
point of contact with the ground.
Global Vehicle Target (GVT) – means the vehicle target used in this protocol
Time To Collision (TTC) – means the remaining time before the VUT strikes the GVT,
assuming that the VUT and GVT would continue to travel with the speed it is travelling.
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