The valve is a simple variable-geometry device that controls the opening and closing of the specified flow window or valve curtain area as determined by the camshaft and rocker ratio. The valve curtain area is defined as the flow window created by the open valve at maximum valve lift.
CALIFORNIA LEGENDS The California Gold Rush In the cold morning hours of January 24, 1848, James Marshall, a construction foreman at Sutter s Mill, was inspecting the water flow through the mill s tail race.
In 1859, the gold rush in Colorado began. Sutter's Mill in California was the site of the first gold discovery in the west. This was in 1849. Imagine reading this exciting headline in your local paper: Pikes Peak, Gold Excitement in the City, A New California. Well, this news appeared in the Leavenworth Times, Kansas.