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ENGINE WITH CONTINUOUS GAS EXCHANGE DURING MOMENTUM STROKE

  • US 20170016327A1
  • Filed: 07/14/2016
  • Published: 01/19/2017
  • Est. Priority Date: 07/15/2015
  • Status: Active Grant
First Claim
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1. An internal combustion engine, comprising:

  • an engine block;

    a cylinder defining at least one combustion chamber in the engine block;

    a piston in the cylinder, the piston being configured to travel in a first stroke from one end of the cylinder to an opposite end of the cylinder, and being sized relative to the cylinder to enable an expansion stroke portion of the first stroke wherein the piston travels under gas expansion pressure, and a momentum stroke portion of the first stroke for a remainder of the first stroke following the expansion stroke portion;

    at least one piston rod portion connected to the piston and extending from a location within the at least one combustion chamber to an area external to the cylinder;

    at least one recess in the piston rod portion, the at least one recess forming a passageway configured to communicate air flow between the at least one combustion chamber and the area external to the cylinder;

    at least one fuel gas injector separate from the recess in the piston rod portion, for injecting fuel into the cylinder separate from an introduction of air;

    wherein the at least one recess in the piston rod portion is configured such that when the piston is in the momentum stroke portion of the first stroke following the expansion stroke portion of the first stroke, the at least one recess is configured to continuously communicate fuel-free air between the at least one combustion chamber and the area external to the cylinder.

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