Sergio Quelhas
17Patents
5h-index
35Co-inventors
66Inventor score
Filing activity: Aug 10, 2001 → Jun 21, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6803236B2 | Diagnostic system for monitoring catalyst performance | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6933151B2 | Diagnostic system for monitoring catalyst performance | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6622691B2 | Control method for a direct injection gas engine with fuel vapor purging | Emerging Cross-Sectional Technologies | 11 | Expired |
| US8978453B2 | Crank signal error detection using a cam signal interval | Physics | 6 | Active |
| US9752539B2 | Method for diagnosing leaks downstream of the purge flow control orifice | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US10161501B2 | System and method for adjusting coolant flow through a cooling system of a vehicle to increase a warming rate of a transmission | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US9719389B2 | System and method for reducing cold start emissions using an active exhaust throttle valve and an exhaust gas recirculation loop | 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 |
| US11415040B1 | Heating oil for enhanced active thermal coolant system | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8662056B2 | Fuel pressure control system and method having a variable pull-in time interval based pressure | Emerging Cross-Sectional Technologies | 2 | Active |
| US10605151B2 | Electric pump operating strategy | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10323564B2 | Systems and methods for increasing temperature of an internal combustion engine during a cold start including low coolant flow rates during a startup period | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10895192B1 | Dual pump system and method for cooling an engine of a motor vehicle | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11078825B2 | Method and apparatus for control of propulsion system warmup based on engine wall temperature | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12392300B1 | Vehicle with gasoline particulate filter soot regeneration strategy with criteria emission reduction for low NOX emissions | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11434810B2 | Vehicle thermal management system including mechanically driven pump, rotary valve(s), bypass line allowing engine outlet coolant to bypass heat exchanger(s), or combinations thereof | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10273872B2 | Air-to-air charge air cooler (A-CAC) for a vehicle | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.