Browse Prior Art Database

OPTIMIZED ANGLED HOUSING DESIGN

IP.com Disclosure Number: IPCOM000006541D
Original Publication Date: 1992-Aug-01
Included in the Prior Art Database: 2002-Jan-14
Document File: 2 page(s) / 86K

Publishing Venue

Motorola

Related People

J. M. Villevieille: AUTHOR [+2]

Abstract

The purpose of this mechanical housing concept is to provide an optimized volume shape for implementa- tion of electronic modules embedded into electro- mechanical system interfaces in underhood automotive applications.

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MOTOROLA INC. Technical Developments volume 16 August 1992

OPTIMIZED ANGLED HOUSING DESIGN

by J. M. Villevieille and W. J. McGraw

  The purpose of this mechanical housing concept is to provide an optimized volume shape for implementa- tion of electronic modules embedded into electro- mechanical system interfaces in underhood automotive applications.

  Underhood automotive applications require the Elec- tronic Controllers to get smaller in volume in order to tit into congested engine environment. One of the main trends is to integrate the Electronic Unit with the system electro-mechanical and mechanical interfaces in order to provide good heatsinking capabilities (sometimes referred as "Mecatronic" applications) and also help to save on wiring and overall space constraints.

  Present technique is to use parallelipedic "bathtub" housings with or without heatsink fms depending on the power dissipation and the type of substrate technol- ogy used (conventional printed circuit boards or flexible/ ceramic substrates). See Figure 1.

  Our solution has been developed for an integrated ABS (antilock brake system) application where the ECU was mounted on the ABS valve block and pump con- trol where volume of the motor pump and high pres- sure pipes connections to the valves reduced significantly the available area for any electronics.

  The idea was to design a slanted half-shell bathtub concept with a flexible polyimide substrate glued on the bottom (see Figure 2). This reduced...