Method and device for determining the air flow rate entering the intake manifold of a two-stroke engine
US10697386B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Nov 18, 2016 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Apr 23, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for measuring the flow rate MAF of cool air entering an intake manifold of a two-stroke engine, the intake manifold being located between a throttle body and an intake system. The method uses a specific prediction model depending on whether the two-stroke engine is subject, on the one hand, to a light load and, on the other hand, to a medium or heavy load. The model suitable for the load is selected using a predetermined threshold and two absolute pressure measurements taken at the intake manifold at crankshaft angles of rotation around top dead center and bottom dead center. Next, a pressure quotient is formed for each model which will be used to deduce the flow rate of cool air entering the intake manifold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.