Abstract: The instrument mount assembly of the present invention comprises a pair of spaced apart L shaped brackets having a vertical leg and a horizontal flange extending outwardly from a bottom end thereof in a first direction and a hook at a top end thereof sized and configured to securely engage over a body rail of a truck, extending outwardly from the vertical leg in a direction opposite the flange, each flange being adapted to engage an end edge of an isolation plate sized and configured to support a corresponding instrument thereon, the brackets being engaged to one another by at least one cross rail, with the entire assembly being sized and configured to compactly hold the instrument to the body rail of the truck without interfering with any truck structures proximate thereto.

Abstract: An engine cooling fan (18) is coupled to an engine (14) of a truck (10) through an electric-operated clutch (20) for selectively placing the cooling fan in driven and non-driven relationship with the engine. A control system (22) processes certain data for indicating when engine speed (N) exceeds a reference engine speed (EFC_N_LMX), for indicating when vehicle speed (VSS) exceeds a reference vehicle speed EFC_VSS_LMX), and for indicating when rate of change of engine speed exceeds a selected rate of change of engine speed. The clutch places the fan in non-driven relationship with the engine when the processing discloses vehicle speed exceeding the reference vehicle speed coincident with the processing of the data disclosing either engine speed exceeding the reference engine speed or rate of change of engine speed exceeding the selected rate of change of engine speed.

Abstract: A controller for, and method of, load governing a compression ignition engine. Various data is processed to develop fueling data for accomplishing governed fueling of the engine. The processing includes processing accelerator pedal position data corresponding to the position of an accelerator pedal and engine load data corresponding to the load on the engine to develop engine speed setpoint data according to a function generator containing engine speed setpoint data in correlation with accelerator pedal position data and engine load data to accomplish load governing of the engine in consequence of further processing of the developed engine speed setpoint data. The developed engine speed setpoint data and actual engine speed data are processed by a governor PID to develop the fueling data.

Abstract: An engine speed governor controls a diesel engine in a motor vehicle. The engine control has a processor for processing data for Engine speed governing, including developing fuel request data comprising data components derived from proportional, integral, and derivative processing of difference between actual engine speed and requested engine speed. A data source, such as a gear selector switch in an automatic transmission vehicle or a clutch switch in a manual transmission vehicle, distinguishes between engagement and disengagerrent of the vehicle driveline with and from the engine. A respective first table, such as a map, is associated with each of the proportional, integral, and derivative processing and provides selectable calibration values used by the processor to develop the fuel request data when the driveline is engaged with the engine.