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"With conventional cams, stress is highest at full lift, when turning at zero speed (engine cranking), and diminishes with increasing speed as inertial force of the valve counters spring pressure, while a desmodromic cam has essentially no load at zero speed (in the absence of springs), its load being entirely inertial, and therefore increasing ...
This method uses two cam profiles, with an actuator to swap between the profiles (usually at a specific engine speed). Cam switching can also provide variable valve lift and variable duration, however the adjustment is discrete rather than continuous. The first production use of this system was Honda's VTEC system. VTEC changes hydraulic ...
The valvetrain layout is largely dependent on the location of the camshaft. The common valvetrain configurations for piston engines, in order from oldest to newest, are:
Camless valve trains have long been investigated by several companies, including Renault, BMW, Fiat, Valeo, General Motors, Ricardo, Lotus Engineering who developed electro-hydraulic valve actuation in the late 1980s as a spinoff of their active suspension program (both utilised similar electro-hydraulic actuation and control), Ford, Jiangsu Gongda Power Technologies, and Koenigsegg's sister ...
A U.S. appeals court has rejected British socialite Ghislaine Maxwell's request to revisit its decision upholding her conviction for helping the late financier Jeffrey Epstein sexually abuse ...
Oregon QB Dillon Gabriel, Colorado CB/WR Travis Hunter, Boise State RB Ashton Jeanty and Miami QB Cam Ward are the four finalists for the 2024 Heisman. And there's an incredibly good chance that ...
The engine tuner David Vizard rated this carburetor highly in his book Tuning the A Series Engine and also in recent on-line comments pertaining to the high fueling atomization characteristics of this carburetor suiting the Siamese port layout of BMC A-Series engines.
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