Vijay Ramappan
58Patents
8h-index
63Co-inventors
77Inventor score
Filing activity: Apr 11, 2005 → May 10, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9157390B2 | Selective exhaust gas recirculation diagnostic systems and methods | Emerging Cross-Sectional Technologies | 15 | Active |
| US7765053B2 | Multi-injection combustion cycle systems for SIDI engines | Emerging Cross-Sectional Technologies | 15 | Active |
| US10352223B2 | Method for cold start emissions diagnostic | Emerging Cross-Sectional Technologies | 11 | Active |
| US10808594B2 | Generalized cold start emissions reduction strategy | Emerging Cross-Sectional Technologies | 10 | Active |
| US7975668B2 | Spark timing and control during transitions between spark ignited combustion and homogenous charge compression ignition | Emerging Cross-Sectional Technologies | 10 | Active |
| US7415348B1 | Multiple injection blend for direct injected engines | Emerging Cross-Sectional Technologies | 9 | Active |
| US8316818B2 | HCCI mode switching control system and method | Emerging Cross-Sectional Technologies | 9 | Active |
| US8000882B2 | Active combustion control based on ringing index for reducing homogenous charge compression ignition (HCCI) combustion noise | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US8463531B2 | System and method for controlling exhaust gas recirculation systems | Emerging Cross-Sectional Technologies | 8 | Active |
| US7131425B2 | Method to control auto-ignition in an internal combustion engine equipped with variable valve timing control | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7739027B2 | Method and apparatus for monitoring an EGR valve in an internal combustion engine | Emerging Cross-Sectional Technologies | 6 | Active |
| US7729844B2 | HCCI combustion moding state control for fuel economy and seamless transitions | Emerging Cross-Sectional Technologies | 5 | Active |
| US8118010B2 | Diagnostic systems and methods for fuel injectors in homogenous charge compression ignition engine systems | Emerging Cross-Sectional Technologies | 4 | Active |
| US8726880B2 | Electric cam phaser control systems and methods | Emerging Cross-Sectional Technologies | 4 | Active |
| US8499738B2 | Control systems for a variable capacity engine oil pump | Emerging Cross-Sectional Technologies | 4 | Active |
| US7963268B2 | Control strategy for transitions between homogeneous-charge compression-ignition and spark-ignition combustion modes | Emerging Cross-Sectional Technologies | 4 | Active |
| US7478625B1 | Engine cranking system with cylinder deactivation for a direct injection engine | Emerging Cross-Sectional Technologies | 3 | Active |
| US9506420B2 | External EGR rate feedback | Emerging Cross-Sectional Technologies | 2 | Active |
| US8539932B2 | Systems and methods for heating intake air during cold HCCI operation | Emerging Cross-Sectional Technologies | 2 | Active |
| US8290686B2 | Method for controlling combustion mode transitions for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US10480391B2 | Coolant control systems and methods to prevent coolant boiling | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8322324B2 | System and method for controlling transient switching between HCCI mode and SI mode of an engine | Emerging Cross-Sectional Technologies | 2 | Active |
| US10669922B2 | System and method for adjusting the rate of coolant flow through an engine based on coolant pressure | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8433500B2 | System and method for improved transitions between engine combustion modes | Emerging Cross-Sectional Technologies | 1 | Active |
| US9719408B2 | System and method for engine block cooling | Mechanical Engineering; Lighting; Heating | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.