Overhead Valve Engine

{
  "id": "MLC-T-ENV-020000",
  "term": "Overhead Valve Engine",
  "field": "Environment",
  "definition": "1. Otto-cycle, four stroke engine in which the intake and exhaust valves are located above the combustion chamber within the cylinder head. Such engines are sometimes referred to as “valve-in-head” engines.\n\n2. Relating to a four-stroke spark-ignition engine in which the intake and exhaust valves are located above the combustion chamber within the cylinder head. Such engines are sometimes referred to as “valve-in-head” engines.",
  "references": [
    "40 CFR 90.3 (CFR 2013)",
    "40 CFR 1054.801 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/overhead-valve-engine/"
}