| 摘要 |
<p>A method for testing for leaks in an automotive evaporative emission system is provided. This includes providing a fuel tank (101) containing a gaseous fuel material (104). Then, measuring a pressure of the gaseous fuel material in the fuel tank and providing a reference pressure (505). Then, measuring a pressure in the fuel tank (101) after providing the reference pressure and providing a vacuum change pressure (509). Then, providing an indication (511) in response to a comparison of the vacuum change pressure and a predetermined fraction of the reference pressure indicative of pressure leakage in the fuel tank (101). Additionally, an apparatus (100) for embodying the method is disclosed.</p> |
