Honda Motorcycle Air Bag
Honda Develops World’s First Production Motorcycle
Dainese D-Air Rider Air Bag Used for First Time in
TOKYO, Japan, September 8, 2005 - Honda Motor Co.,
Ltd. today announced it has succeeded in developing the
world’s first production motorcycle airbag system.
The new system, which is claimed to help lessen the
severity of injuries caused by frontal collisions, is to
be made available on the new Gold Wing motorcycle
scheduled for release in late spring of 2006 in the US.
The Motorcycle Airbag System is comprised of the
airbag module, which includes the airbag and the
inflator; crash sensors, which monitor acceleration
changes; and an ECU, which performs calculations to
instantly determine when a collision is occurring.
When a severe frontal collision occurs, the four crash
sensors mounted on the front fork measure the change in
acceleration caused by the impact and convey this data
to the airbag ECU, which determines that a collision is
occurring and whether or not it is necessary to inflate
If the calculations performed by the ECU indicate
that airbag deployment is necessary, the ECU sends an
electronic signal to the airbag inflator, which
instantaneously responds by inflating the airbag.
Inflating rapidly after the impact, the airbag can
absorb some of the forward energy of the rider, reducing
the velocity at which the rider may be thrown from the
motorcycle and helping lessen the severity of injuries
caused by the rider colliding with another vehicle or
with the road.
By conducting extensive crash tests at its indoor
omni-directional Real World Crash Test Facility,
applying advanced computer simulation technology, and
leading the way with the introduction of motorcycle
rider test dummies, Honda has gathered and analyzed a
wide array of data on the behavior of motorcycles during
Honda has also taken full advantage of the experience
of its automobile operations in the development of
airbags, applying its expertise in the development of
the Motorcycle Airbag System.
Motorcycle Airbag System: Principal Components
- The airbag module, containing the airbag and
inflator, is positioned in front of the rider.
- The airbag ECU, positioned to the right of the
module , analyzes signals from the crash sensors to
determine whether or not to inflate the airbag.
- Four crash sensors attached on both sides of the
front fork detect changes in acceleration caused by
Functions of the Principal Components
The airbag module contains the airbag and airbag
inflator. The airbag inflator receives an
electronic signal transmitted by the airbag ECU
instructing it to release nitrogen gas to inflate the
airbag. The airbag starts to inflate, exerting
pressure on the cover of the airbag module, forcing it
The size and shape of the airbag, the manner in which
is secured to the motorcycle with tethers, and the
function of the deflation vents all help to maximize the
effectiveness with which the system absorbs the kinetic
energy of the rider, helping control the velocity at
which the rider may tend to be thrown forward from the
motorcycle, and thus lessening the severity of any
injuries resulting from impact with another vehicle or
with the road.
Honda claims that It takes only 0.060 seconds* from
the moment an impact is recognized as a collision to the
moment of airbag inflation.
The airbag ECU continuously monitors the data received
from the crash sensors, and by comparing this data to
standard vehicle behavior, determines whether or not it
is necessary to deploy the airbag.
The data from each sensor is evaluated independently,
and if it is determined to deviate from programmed
standards of safe vehicle behavior by a certain
predetermined degree, an electronic signal is sent to
the airbag inflator, which causes the airbag to inflate.
The crash sensors which monitor acceleration changes are
attached to the front fork legs to optimize the
quickness and accuracy of their detection of frontal
impacts. No alteration of the structure of the
motorcycle is needed. To optimize the accuracy of
collision detection, a set of 4 sensors are arranged—two
on each side of the front fork.
*Side collision with a stationary
vehicle (Honda Accord) at 50km/h
Note: For informational use only. All material and
photographs are Copyright © webWorld International, LLC - 2000-2011. All
rights reserved. See the webBikeWorld®
page. NOTE: Product specifications, features and details may
change or differ from our descriptions. Always check before purchasing. Read
Terms and Conditions!