Hydro-mechanical overhead for internal combustion engine

Details Hydro-mechanical overhead for internal combustion engine Hydro-mechanical overhead for internal combustion engine

1985-12-18

1987-05-12

Lazarus, Ira S.

Internal-combustion engines

Convertible cycle

123 9013, 123321, 123 9015, F02D 1304, F02B 6906

Patent

active

046640703

ABSTRACT:
An hydromechanical overhead is provided for a four-cycle internal combustion engine. The hydromechanical overhead includes a set of master cylinders and pistons adapted to be actuated by each of the engine exhaust and intake pushtubes, a set of slave cylinders and pistons adapted to actuate each exhaust and intake valve, a two-position three-way control valve associated with each slave cylinder, passageways interconnecting the several master and slave cylinders and control valves and electronic control means adapted to move the control valves between a first position wherein the engine operates in a four-cycle powering mode and a second position wherein the engine operates in a two-cycle retarding mode. A solenoid controlled lash adjustment mechanisn is provided for the exhaust and intake valves whereby the normal lash required for the powering mode of engine operation may automatically be increased to the substantially larger lash required for the two-cycle retarding mode of engine operation.

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patent: 4572114 (1986-02-01), Sickler
patent: 4592319 (1986-06-01), Meistrick

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