Cylinder blanking system for internal combustion engine

A cylinder de-activation system for internal combustion engines of the type having a block with a turbo charger, plurality of reciprocating pistons, fuel injectors associated with each piston moveable between a first open fuel injecting position and a second closed position, cam actuated rocker engageable with said injector to position said injector between said first and second positions, said de-activation system comprising:

• (a) actuator means having an actuated position engageable with said rocker arm to secure said injector in said second position blanking the associated cylinder;
• (b) sensor means for sensing the turbo pressure of said engine and providing a control signal when said turbo pressure is within a predetermined range;
• and
• (c) control means responsive to said control signal to place said actuator means in said actuated position when said first operating condition has existed for a predetermined time period.

A cylinder de-activation system for an internal combustion engine of the combustion ignition type having an electrical system, an engine block with a plurality of reciprocating pistons in the block, a fuel injector associated with each cylinder moveable between a first fuel injection position and a second fuel flow-restricting position, a rocker arm pivotally mounted to move said fuel injector between said first and second positions, cam actuated push rod operatively engaging said rocker arm and turbo pressure generating means, said de-activation system comprising

• (a) housing means adapted to be positioned on said engine adjacent said rocker arm, said housing defining a cylinder chamber, said cylinder chamber having a piston reciprocal therein with locking means reciprocally carried on said piston and aligned with said rocker arm having a first position out of operative engagement with said rocker arm and a second position engaging said rocker arm;
• (b) a fluid control valve for selectively delivering fluid pressure to said cylinder chamber, said fluid valve including an electric operator connected to said electrical system actuable from a first position with said control valve communicating said chamber with a reduced pressure area and a second position directing fluid pressure to said chamber;
• (c) pressure switch means connected to a source of electrical energy responsive to turbo pressure of the engine to emit an electrical signal when the turbo pressure is within a predetermined range;
• (d) timer means electrically connected to receive the output of said pressure switch means to transmit an electric signal to said electric operator only upon receiving a signal from said pressure switch for a predetermined period of time whereby upon receiving an electric signal from the timer, said electric operator will move said fluid control valve to said second position pressurizing said cylinder chamber to bring said locking means into engagement with said rocker arm thereby moving said injector to said first flow blocking position.