Techniques for evaluating performance of internal combustion engine components

摘要

One embodiment is a unique strategy for evaluating performance of a component of an internal combustion engine. More particularly, in one non-limiting form a method includes operating a component, such as a heating component, and measuring a first characteristic related to its operation. The method also includes operating an engine accessory and measuring a second characteristic related to its operation, and determining performance of the component by relating the first and second characteristics to one another. In one aspect, relating the first and second characteristics to one another provides a first value which is compared to a predetermined value, and performance of the component is determined from this comparison. Other embodiments include unique methods, systems, and apparatus for evaluating or monitoring the performance of a component of an internal combustion engine, and/or for performing a procedure for starting the internal combustion engine.

主权项

1. A method, comprising:
determining a first voltage reduction of a battery system during operation of a heating component associated with an internal combustion engine; determining a second voltage reduction of the battery system during operation of an engine accessory, wherein the engine accessory includes a starter and operation of the engine accessory includes starting the internal combustion engine with the starter after operation of the heating component to determine the first voltage reduction, the second voltage reduction being determined during the starting; using the second voltage reduction to determine an expected voltage reduction during operation of the heating component; and determining a performance of the heating component from the first voltage reduction and the expected voltage reduction.