{
  "$type": "site.standard.document",
  "description": "A method for estimating an air mass flow (m) entering a cylinder of a four-stroke positive ignition engine (E), equipped with an intake manifold (1M) and at least one intake valve and a pressure (PS) and a temperature (TS) sensor associated with the intake manifold, the method being based on a…",
  "path": "/patents/1394916",
  "publishedAt": "2025-02-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/0002",
    "FPT IND SPA [IT]"
  ],
  "textContent": "A method for estimating an air mass flow (m) entering a cylinder of a four-stroke positive ignition engine (E), equipped with an intake manifold (1M) and at least one intake valve and a pressure (PS) and a temperature (TS) sensor associated with the intake manifold, the method being based on a model for estimating the air mass flow rate comprising a first contribution (f(p,T,Ne,η,.,.)) calculated by means of a modelling in stationary conditions of the estimate of the mass of air entering the engine, a second contribution m p , T , … p ˙ p μ function of an average pressure and a relative derivative over time, estimated as a function of pressure at the intake manifold a third contribution m p , T , … T ˙ T υ as a function of a temperature and a relative time derivative estimated at said intake manifold, wherein the second contribution is positive, while the third contribution is negative.",
  "title": "METHOD FOR ESTIMATING AN AIR MASS FLOW RATE ENTERING A FOUR-STROKE SPARK IGNITED ENGINE"
}