Engine air filter replacement indication system
First Claim
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1. A method for providing a user of an internal combustion engine with an economically optimum air filter replacement interval, the method comprising the following steps:
- (a) sensing air filter plugging rate data and engine duty cycle data,(b) providing an algorithm that accounts for;
(i) dP, pressure drop across the air filter,(ii) penalty based on increased fuel consumption caused by the pressure drop across the air filter, and(iii) the cost of air filter replacement, and(c) providing an indication to the user of the optimum air filter replacement interval based on the air filter plugging rate data, the engine duty cycle data, and the algorithm.
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Abstract
Disclosed are methods and systems for monitoring and indicating the optimal replacement interval for a filter. In particular, the methods and systems may be utilized for monitoring and indicating the optimal replacement interval of an air filter in an internal combustion engine based on parameters that include air filter plugging rate data, engine duty cycle data, pressure drop across the air filter, penalty on fuel consumption, and the cost of air filter replacement.
62 Citations
24 Claims
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1. A method for providing a user of an internal combustion engine with an economically optimum air filter replacement interval, the method comprising the following steps:
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(a) sensing air filter plugging rate data and engine duty cycle data, (b) providing an algorithm that accounts for; (i) dP, pressure drop across the air filter, (ii) penalty based on increased fuel consumption caused by the pressure drop across the air filter, and (iii) the cost of air filter replacement, and (c) providing an indication to the user of the optimum air filter replacement interval based on the air filter plugging rate data, the engine duty cycle data, and the algorithm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 20, 21, 22, 23, 24)
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- 18. The method according to claim comprising providing the algorithm in a service tool separate from the engine.
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