Dual displacement engine
OwnerWilliam J. Schulzinventor
Life of this patent
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Abstract
A system is disclosed for use in connection with a conventional Otto or four cycle, multi-cylinder, internal combustion engine with the system being adapted to selectively disable half of the operating cylinders of the engine whereby substantial fuel economies can be realized. The present system is adapted to be used as an attachment on a conventional automotive engine and is equally applicable to four, six, and eight cylinder engines. The system disables selected cylinders by both inhibiting flow of fuel to the cylinder and disabling the exhaust valve in an open condition so that the disabled cylinder will, in effect, be free wheeling in that it does not use fuel or produce unused compression which must be overcome by the remaining cylinders.
Claims9
An apparatus for disabling at least one selected cylinder of a conventional four cycle, multi-cylinder, internal combustion engine under light load conditions in order to effect operational economy, said apparatus comprising:
- auxiliary valve means located in an intake manifold leading to each selected cylinder;
- valve lock-up means acting on an exhaust valve of each selected cylinder to lock said exhaust valve in an open condition, said lock-up means comprising a solenoid having a piston rod, a linkage assembly one end of which is attached to said piston rod and the other end of which is movable out of and into a position in which said exhaust valve is held open;
- and
- control means responsive to actuation of an accelerator and means connecting said control means to said auxiliary valve means and said solenoid for controlling operation of said auxiliary valve means and said exhaust valve lock-up means whereby, under low load conditions, said selected cylinder is disabled by closure of said auxiliary valve and locking open said exhaust valve.
Dependencies are inferred from the claim text.