Pre-ignition prevention using ion sense detection of exhaust stroke heat release for dual spark plug engines
US12378937B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2024 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Aug 19, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pre-ignition prevention system for a turbulent jet ignition (TJI) engine having dual spark plugs includes an ion sensing system and a controller configured to receive the ion sense signal from the ion sensing system, detect, using the ion sense signal, a misfire event where a firing of a first spark plug fails to completely combust a fuel/air pre-charge in a pre-chamber of a cylinder of the TJI engine, in response to detecting the misfire event, detect, using the ion sense signal, an exhaust stroke heat release event after a firing of the second spark plug indicative of a remaining portion of a primary fuel/air charge in the main chamber and, in response to detecting the exhaust stroke heat release event, adjust fueling for at least one subsequent combustion cycle to prevent pre-ignition of the remaining portion of the primary fuel/air charge in the main chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.