Famous Patents
In 1879, Auguste Bartholdi received design patent number 11,023 titled "Design for a Statue". It was for the Statue of Liberty.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6257174 | Method of determining the composition of fuel in a flexible fueled vehicle after fuel blending The present invention provides a flexible fuel compensation system for determining the percent alcohol content of fuel in a flexible fueled vehicle at the instance of fueling and in an open loop operating mode. According to the invention, two estimated pe... | 07/10/2001 |
| 6202478 | Evaporative system leak detection feature after a refueling event A method is provided for testing an evaporative emission control system for a missing or loose fuel cap comprising detecting a refueling event and running a leak detection test of the evaporative emission control system to determine if a large leak is pre... | 03/20/2001 |
| 6041278 | Method of triggering a determination of the composition of fuel in a flexible fueled vehicle A method is provided for triggering a system for learning the percent alcohol content of a fuel used in a motor vehicle capable of operating on more than one type of fuel. The fuel composition learning system is triggered each time fuel is added to the ve... | 03/21/2000 |
| 5901671 | Method of determining the composition of fuel in a flexible fueled vehicle after fuel blending The present invention provides a flexible fuel compensation system for determining the percent alcohol content of fuel in a flexible fueled vehicle at the instance of fueling and in an open loop operating mode. According to the invention, two estimated pe... | 05/11/1999 |
| 5881703 | Method of determining the composition of fuel in a flexible fueled vehicle The present invention provides a flexible fuel compensation system for controlling operating parameters of an internal combustion engine based on a learned value of the percent alcohol content of the fuel using an oxygen feedback system. The methodology d... | 03/16/1999 |
| 5715799 | Method of leak detection during low engine vacuum for an evaporative emission control system A method of leak detection for an evaporative emission control system during periods of low engine vacuum includes the steps of pulsing a leak detection pump at a predetermined rate and determining whether engine vacuum level is low. The method also inclu... | 02/10/1998 |
| 5685279 | Method of de-pressurizing an evaporative emission control system A method of de-pressurizing an evaporative emission control system includes the steps of pulsing a leak detection pump at a predetermined rate and purging accumulated vapors from a vapor canister. The method also includes the steps of determining whether ... | 11/11/1997 |
| 5651350 | Method of leak detection for an evaporative emission control system A method of leak detection for an evaporative emission control system to determine if a leak is present in a portion of the system includes the steps of energizing a leak detection pump to close a canister vent control valve of the system and pressurize t... | 07/29/1997 |
| 5641899 | Method of checking for purge flow in an evaporative emission control system A method of checking for purge flow in an evaporative emission control system includes the steps of determining if there is a fault in a leak detection pump, de-energizing the leak detection pump if there is a fault, and determining the state of a leak de... | 06/24/1997 |
| 5616836 | Method of pinched line detection for an evaporative emission control system A method of pinched line detection for an evaporative emission control system to determine if a pinched line is present within the system includes the steps of pulsing a leak detection pump at a predetermined rate and determining if a last pump period is ... | 04/01/1997 |
| 5606121 | Method of testing an evaporative emission control system A method of testing an evaporative emission control system to determine if the evaporative emission control system has reached a predetermined pressure includes the steps of pulsing a leak detection pump at a predetermined rate and determining if a last p... | 02/25/1997 |
| 5263460 | Duty cycle purge control system A method of controlling a purge solenoid for a purge control system of an internal combustion engine is provided. The method includes the steps of determining whether predetermined conditions are right for duty cycling the purge solenoid and turning the p... | 11/23/1993 |
