Patent ID: 9228529
Filing Date: 2016-01-05
CPC Classification: F02D,F02M,Y02T

Claim Text:
1. An engine protection apparatus for preventing inflow of water, comprising: a time count unit configured to count time starting from the time point at which a water detection signal is received thereto from a WIF (Water In Fuel) sensor installed in a water separator; an RPM (Revolution Per Minute) drop request unit configured to check whether or not water drain occurs at the time point when the counted accumulated time period exceeds a preset time period, generate an RPM drop request signal if the water drain does not occur, and cancel the RPM drop request signal if the water drain occurs; and an engine RPM drop processing unit configured to drop the engine RPM in response to the generated RPM drop request signal; wherein the engine RPM drop processing unit assigns a predetermined reference drop RPM to a current engine RPM, and the engine RPM drop processing unit drops the current engine RPM to the reference drop RPM when the RPM drop request signal is received by the engine RPM drop processing unit.