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Hybrid brake-throughs.


Ever looked under the hood under the hood - [hot-rodder talk] 1. The underlying implementation of a product (hardware, software, or idea). Implies that the implementation is not intuitively obvious from the appearance, but the speaker is about to enable the listener to grok it.  of a hybrid vehicle For other types of "Hybrid Transportation", see .

A hybrid vehicle (HV) is a vehicle that uses two or more distinct power sources to propel the vehicle such as:
? All those wires, hoses and metal bits take up a vast amount of real estate. With underhood space at a premium, you'd think automakers would embrace any technology that both saves weight and reduces the number of parts. At least that's what the folks at TRW Automotive
For other things named TRW, see TRW (disambiguation).


On 12th December 12 2002, Northrop Grumman acquired TRW Inc. An 80.1% stake (later increased to more than 90%) in TRW Automotive Holdings, including the former LucasVarity Automotive, was spun off to
 (www.trwauto.com) are hoping will take place. TRW TRW The Real World (TV reality show)
TRW The Right Way
TRW Tactical Reconnaissance Wing
TRW The Retriever Weekly (University of Maryland, Baltimore, MD)
TRW Thompson Ramo Wooldridge Inc
 has developed two advanced regenerative braking technologies that do just that: Slip Control Boost (SCB ScB
abbr. Latin
Scientiae Baccalaureus (Bachelor of Science)
) and Active Hydraulic Braking (AHB AHB Advanced High-performance Bus
AHB Assault Helicopter Battalion
AHB Air Historical Branch
AHB Attack Helicopter Battalion
AHB Automatic Half Barriers
AHB Aussie Home Brewers
AHB Active Hyper Bass
). SCB is a fully-integrated stability and brake actuation system that replaces the current boosters, master cylinders and vacuum pumps with an electro-hydraulic control unit and brake pedal simulator with integral dual master cylinder that supplies brake pressure.

"This is an integrated device, meaning that you have both a boost and slip control function, all integrated into one," said Dan Milot, TRW's chief engineer, new products-North America. "And by removing the booster, you save space. This provides flexibility in terms of the additional space available under the hood." Another key benefit is weight savings provided by the reduction in the overall number of parts when compared to a traditional system, along with maximum energy recovery through regenerative braking. According to Phil Cunningham, director of Chassis Product Planning, the regenerative function will be imperceptible to the vehicle operator. "One thing you don't want is the driver to feel the switching between the regenerative braking mode and conventional braking mode and this system does that," he says. TRW already has signed a contract with a U.S. domestic OEM (Original Equipment Manufacturer) The rebranding of equipment and selling it. The term initially referred to the company that made the products (the "original" manufacturer), but eventually became widely used to refer to the organization that buys the products and  to supply the SCB system for an upcoming hybrid vehicle due on the market in the 2008 model year.

[ILLUSTRATION OMITTED]

[ILLUSTRATION OMITTED]

For those automakers who already have an electronic stability control system supplier, TRW has its AHB system. This works in conjunction with any currently available ESC See escape character and escape key. See also ESC/P.

ESC - escape
 system, and provides a single full-functionality electro-hydraulic braking solution that can be used across multiple vehicle platforms and powertrain systems, including both conventional and hybrid applications. "What you have is a boost element integrated with the master cylinder that is packaged with a standalone vehicle stability system that can apply brake pressure autonomously," says Milot. However, getting OEMs to ante up for the AHB system may be a challenge due to the extra cost involved, especially for non-hybrid vehicles. Since AHB requires complex collision mitigation systems to achieve full benefits, it is unlikely the technology will find mass applications anytime soon. That means prices for electronic stability control, antilock an·ti·lock  
adj.
Of or being a motor vehicle braking system that electronically monitors and adjusts individual wheel speeds during braking to prevent the wheels from locking.
 brakes, and radar or lidar-based collision warning systems will have to drop to bring the combined price to an acceptable level, a process that may take a few more years. "The two technologies together will have to get deployed on vehicles, therefore it will be pulled by the technologies that support it," Cunningham said. The cost challenges are the reason TRW has set a later launch date for the AHB system. It is expected to arrive on a model year '09 vehicle.--KMK
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Title Annotation:TRW automotive inc
Publication:Automotive Design & Production
Geographic Code:1USA
Date:Mar 1, 2006
Words:502
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