Valve deactivating system for an engine
First Claim
Patent Images
1. An engine system, comprising:
- a camshaft saddle including a stationary groove;
a camshaft including a discontinuous groove, the camshaft fitted to the camshaft saddle, and the stationary groove aligned with the discontinuous groove;
an oil pump supplying oil to an oil inlet port wherein the oil inlet port is located along the camshaft saddle and in fluidic communication with the stationary groove; and
an oil control valve located along an oil gallery leading from the oil pump to the oil inlet port.
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Abstract
Systems and methods for operating an engine with deactivating valves are presented. In one example, a groove in a camshaft controls oil flow to a valve operator that selectively activates and deactivates a poppet valve of a cylinder. The groove moves with the camshaft so that oil delivery to the valve operator is timed properly to deactivate and reactivate the cylinder.
32 Citations
13 Claims
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1. An engine system, comprising:
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a camshaft saddle including a stationary groove; a camshaft including a discontinuous groove, the camshaft fitted to the camshaft saddle, and the stationary groove aligned with the discontinuous groove; an oil pump supplying oil to an oil inlet port wherein the oil inlet port is located along the camshaft saddle and in fluidic communication with the stationary groove; and an oil control valve located along an oil gallery leading from the oil pump to the oil inlet port. - View Dependent Claims (2, 3, 4)
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5. An engine system, comprising:
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a camshaft including a first discontinuous groove, and a second discontinuous groove; a first valve body including a first stationary groove and a first inlet port and a first outlet port; a first intake valve operator in mechanical communication with the camshaft and in fluidic communication with the first discontinuous groove; a first valve positioned along a conduit between the first valve body and an oil pump, a second valve positioned along the conduit between a second valve body and the oil pump, the second valve body including a second stationary groove and a second inlet port and a second outlet port; and a second intake valve operator in mechanical communication with the camshaft and in fluidic communication with the second discontinuous groove. - View Dependent Claims (6, 7, 8, 9)
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10. A vehicle system, comprising:
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an engine including a camshaft with a discontinuous groove; a valve operator in mechanical communication with an exhaust valve and in fluidic communication with the discontinuous groove; and a camshaft journal cap including an oil exit port; and an accumulator in fluidic communication with the oil exit port. - View Dependent Claims (11, 12, 13)
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Specification