The system is provided to calibrate the ECU of the vehicle. The system comprises a remote computer, a central server, a local computer and setup comprising at least a dynamo meter, and at least one actuator. The dynamo meter and the actuator are interfaced and operated with the local computer. The central server is connected to the local computer by a second networking means, and a remote computer is connected to the central server by a first networking means. The remote computer, uploads instructions to the central server, executes the instructions through the local computer to operate the dynamo meter and the actuator, and calibrates the ECU of the vehicle. The instructions are downloaded to the local computer by the second networking means.

The present teaching includes a speed control of a side shaft of a drive train connected to a dynamometer on a drive train test stand in which a torque (M.sub.Fxi) caused by the longitudinal force (F.sub.Xi) calculated in a simulation model is additionally transferred to the control unit, and from this a compensation torque (M.sub.Ki) is calculated in the control unit as a function of the longitudinal force (F.sub.Xi) caused by the torque (M.sub.Fxi) and a deviation (A.sub.Ji) between a moment of inertia (J.sub.Bi) of the dynamometer and a moment of inertia (J.sub.Ri) of the simulated vehicle wheel, the control unit calculates a torque (M.sub.REi,) from the setpoint speed (n.sub.Bi,set) with a speed controller and a torque (M.sub.Bi,soll) to be set with the dynamometer is calculated as the sum of the compensation torque (M.sub.Ki) and the torque (M.sub.REi) calculated by the speed controller and set by the dynamometer.

A method, system, apparatus and computer program for identifying loads impacting a vehicle that includes a vehicle body and a suspension system, wherein the method includes acquisition of a system response from a plurality of sensors under dedicated conditions in a test environment, where the said sensors are assigned to the suspension of the vehicle, acquisition of system loads by applying the same dedicated conditions in a simulation environment, generation of a calibration matrix based on data pertaining to the system response and data pertaining to the system loads, acquisition of an operational system response from the plurality of sensors in a test-track situation, and utilization of the acquired operational system response and the calibration matrix for calculating numerical values for the loads impacting the vehicle.

Systems and methods for improving fuel economy in vehicles such as Class 8 trucks are provided. In some embodiments, signals indicating states of the powertrain are collected and used to generate fuel rate optimization values. Fuel rate optimization values may indicate a difference between optimum fuel flow rates and actual fuel flow rates during a vehicle drive cycle. Recorded fuel rate optimization values may be used to compare different vehicle configurations during testing, and may also be used to evaluate vehicle performance during real-world operation.

A processor, responsive to a set of location or motion data describing one or more objects relative to a first, local frame of reference, generates a transformed set of location or motion data describing the one or more objects relative to a second, local frame of reference different than the first local frame of reference, such that the set of location or motion data and the transformed set of location or motion data relative to a global frame of reference are same. The processor also outputs the transformed set of location or motion data to a vehicle such that the vehicle performs control operations responsive thereto.

A test apparatus for simulating off-road conditions for a motor vehicle includes a platform, front and rear roller assemblies, a driveshaft and at least one resistance assembly. Each of the front roller assembly and the rear roller assembly is coupled to the platform and configured to receive a pair of wheels of the motor vehicle. The driveshaft is secured between the front roller assembly and the rear roller assembly and configured to transmit rotary power from one of the front roller assembly and the rear roller assembly to the other of the front roller assembly and the rear roller assembly. Each resistance assembly is coupled to at least one of the front and rear roller assemblies and is configured to vary a resistance of the at least one of the front and rear roller assemblies. An orientation of the platform is adjustable.

A mobile emergency charging device for a battery of a motor vehicle that is designed to charge the battery in a recuperation operation. The mobile emergency charging device has at least one fuel tank, an internal combustion engine, and at least one drive roller for driving a wheel of the motor vehicle. This at least one drive roller is connected at least indirectly to an output shaft of the internal combustion engine and, by way of this connection, the drive roller is set into a rotational movement when the internal combustion engine is running.

A test method includes deriving road grade information or wind load information from test schedule torque outputs generated by a dynamometer operatively arranged with a first vehicle, and controlling an accelerator pedal, an accelerator pedal signal, a fuel injector, a manifold pressure, a motor controller, or a throttle valve associated with the first or a second vehicle according to a speed schedule such that the dynamometer, or another dynamometer, programmed with the road grade information or wind load information and operatively arranged with the first or second vehicle applies a load to the first or second vehicle that reflects the road grade information or wind load information.

A test method for a vehicle powertrain includes, during a first test of a first vehicle or a portion of a first vehicle on a dynamometer, coordinatingly controlling (i) an accelerator pedal, an accelerator pedal signal, a fuel injector, a manifold pressure, a motor controller, or a throttle valve according to a load schedule and (ii) the dynamometer according to a speed schedule such that the dynamometer applies dynamic torque that causes a powertrain of the first vehicle or portion of the first vehicle to produce dynamic powertrain torque. The test method also includes recording values defining a history of the dynamic torque, and during a second test of the first vehicle or portion of the first vehicle on the dynamometer or another dynamometer, or during a second test of a second vehicle or a portion of a second vehicle on the dynamometer or another dynamometer, coordinatingly controlling (iii) an accelerator pedal, an accelerator pedal signal, a fuel injector, a manifold pressure, a motor controller, or a throttle valve according to the values defining the history of the dynamic torque and (iv) the dynamometer or the another dynamometer according to the speed schedule such that the dynamometer or the another dynamometer applies dynamic torque that causes a powertrain of the first vehicle or portion of the first vehicle or a powertrain of the second vehicle or portion of the second vehicle to reproduce the dynamic powertrain torque.

The present invention relates to a method for testing or verifying the indirect pressure monitoring system of the wheels (TW) of a vehicle (V).