Method and system for engine control

摘要

Methods and systems are provided for use of a windshield wiper fluid having a reformulated composition including one or more non-ionic surfactants. The fluid is delivered to the windshield in response to an operator demand for wiping the windshield. The same fluid is also delivered to a cylinder in response to an indication of abnormal cylinder combustion.

主权项

1. A method for an engine comprising,
in response to knock, direct injecting a fluid including one or more non-ionic surfactants into a cylinder from a first reservoir; and in response to operator demand, delivering the fluid from the first reservoir to a vehicle windshield while mixing a second fluid from a second reservoir with the first fluid via an aspirator, the second fluid being a concentrated aqueous liquid with ionic surfactants.