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Apparatus and methods for determining a desired charge density for an engine having an inlet air pathway. A first characteristic indicative of an engine speed of the engine is determined. A second characteristic indicative of a load on the engine is determined. A third characteristic indicative of a

Apparatus and methods for determining a desired charge density for an engine having an inlet air pathway. A first characteristic indicative of an engine speed of the engine is determined. A second characteristic indicative of a load on the engine is determined. A third characteristic indicative of a humidity of air in the inlet air pathway. A value indicative of a desired charge density of a combustion mixture for the engine is determined as a function of the first, second, and third characteristics.

대표청구항 ▼

Apparatus and methods for determining a desired charge density for an engine having an inlet air pathway. A first characteristic indicative of an engine speed of the engine is determined. A second characteristic indicative of a load on the engine is determined. A third characteristic indicative of a

Apparatus and methods for determining a desired charge density for an engine having an inlet air pathway. A first characteristic indicative of an engine speed of the engine is determined. A second characteristic indicative of a load on the engine is determined. A third characteristic indicative of a humidity of air in the inlet air pathway. A value indicative of a desired charge density of a combustion mixture for the engine is determined as a function of the first, second, and third characteristics. nd positional signal of the target with the object positioned at a second steering angle;generating a third positional signal of the target with the object positioned at a third steering angle;calculating a first positional parameter for the steering system based on the first and second positional signals;calculating a second positional parameter for the steering system based on the second and third positional signals;accessing reference positional parameters; anddetermining an operational status of the steering system based on the first and second positional parameters, and the reference positional parameters.12. The method of claim 11, wherein the steering system is a steering system of a vehicle having a multiple link suspension.13. The method of claim 12, wherein the first and second positional parameters are caster values of the vehicle.14. The machine-readable medium of claim 11, wherein both the difference between the first and second steering angles, and the difference between the second and third steering angles are smaller than a predetermined angle.15. The machine-readable medium of claim 14, wherein the predetermined angle is five degrees.16. A system for diagnosing a vehicle steering system that steers a wheel, comprising: an image sensor for forming a viewing path with a target attached to the wheel and for generating positional signals of the target; anda data processing system configured to couple to the image sensor, the data processing system including a data processor for processing data and a data storage device for storing data, wherein the data storage device bears instructions upon execution by the data processor causing the data processing system to perform the