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Newer automatic transmission designs often use many pressure control solenoids, and sometimes allow the shift solenoids themselves to provide precise pressure control during shifts by ramping the solenoid on and off. The shift pressure affects the shift quality (too high a pressure will result in rough shifting; too low a pressure will cause ...
A transmission solenoid or cylinoid is an electro-hydraulic valve that controls fluid flow into and throughout an automatic transmission. Solenoids can be normally open or normally closed. They operate via a voltage or current supplied by the transmission computer or controller.
Honda CR-X del Sol Si & ESi (late model with D16Y8 engine) 1997-1999 S20 B000 — 5-speed Honda Civic coupe EX; 1998 S40 (E5F and P4A may be casting codes) — 5-speed Honda Civic LX; 2003 YZC6 — 6-speed Acura CL Type-S; 2004-2007 ATC6 — 6-speed Honda Accord 3.0L; 2007-2008 SMJM — 5-speed Honda Fit; 2009-2014 SP4M — 5-speed Honda Fit
Shift blocking is a feature of automobile manual transmissions added to improve fuel economy ratings in the Corporate Average Fuel Economy (CAFE) system by preventing a driver from switching from first gear to second or third as would be done normally. A solenoid prevents the shifter from engaging these gears, forcing the driver to shift from ...
The original Hondamatic, like all following Honda automatics, featured gears on parallel axes rather than planetary gears like most other automatic transmissions. The two gears for each ratio - one driving and the other driven - are in constant mesh and each ratio is engaged by a dedicated clutch connected to one of the ratio's two gears.
Some high-performance sport bikes use a trigger-shift system, with a handlebar-mounted trigger, paddle, switch, or button, and an automatically operated clutch. [13] [106] [107] Some dirt bikes use this system, which is sometimes referred to as an auto-clutch transmission. [31] [29] [32] These include the Honda CRF110F [108] [109] and Yamaha TT ...
A variable force solenoid (VFS) is an electro-hydraulic device that controls pressure proportionally or inversely proportionally to a signal (voltage or current) obtained from the on-board controller of a powertrain. A low flow VFS is used as a signal level devices for transmission line pressure control or application of clutches.
Automated manual transmissions can be semi-automatic or fully-automatic in operation. Several different systems to automate the clutch and/or shifting have been used over the years, but they will generally use one of the following methods of actuation for the clutch and/or shifting: hydraulic or electro-hydraulic actuation, [12] electro-mechanical, [13] pneumatic, [6] [14] [15] electromagnetic ...