Sensata focuses on transmission pressure technology.
Pressure-based transmission control systems have gained in
popularity, as witnessed by GM's six-speed automatic transmission,
which utilizes pressure-sensing systems to improve clutch feel and
shifting performance. The sensors are produced by Sensata Technologies
(www.sensata.com). "GM is leading with their new pressure-based
control systems," says Abelardo Gonzalez, director of the Sensata
Technologies U.S. automotive group and global transmission division.
"These systems are much more accurate than speed-based
technologies." Sensata offers a number of pressure sensor technologies based on microelectromechanical (MEMS), ceramic capacitive
and strain gauge designs, Gonzalez is particularly keen on the continued
development of MEMS for future transmission-based applications.
"The line pressure stability in MEMS is excellent, not to mention
it has a very low profile and is submersible," he says. According
to Sensata, the transmission pressure sensor market increasingly will
require improved performance at the low end of the operating range
(30-60 bar or less).--KMK