Apparatus and method for testing using dynamometer
AssigneesHoriba Europe GmbH, Horiba Instruments, Inc., Horiba Mira Limited
InventorsThomas Hoehr, Leo Alphonse Gerard Breton, Alex Mason
Life of this patent
Estimating the term…
Abstract
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.
Claims20
A test method comprising:
- deriving a road grade profile, corresponding to a real world route, from a difference between (i) data indicative of a total load on a vehicle measured by a dynamometer operatively arranged with the vehicle and (ii) data indicative of a calculated zero-grade load or a zero-grade load applied to the vehicle by the dynamometer;
- and
- controlling an accelerator pedal, an accelerator pedal signal, a fuel injector, a manifold pressure, a motor controller, or a throttle valve according to a speed schedule such that a corresponding dynamometer programmed with the road grade profile applies a load.
A test method comprising:
- deriving wind load information, corresponding to a real world route, from a difference between data indicative of a total load on a vehicle measured by a dynamometer operatively arranged with the vehicle, and a combination of (i) data indicative of a calculated zero-grade load or a zero-grade load applied to the vehicle by the dynamometer, and (ii) data indicative of a load due to actual road grade;
- and
- controlling an accelerator pedal, an accelerator pedal signal, a fuel injector, a manifold pressure, a motor controller, or a throttle valve according to a speed schedule such that a corresponding dynamometer programmed with the wind load information applies a load.
A test method comprising:
- deriving dynamometer road load control parameters for a vehicle from a difference between (i) data indicative of a total load on the vehicle measured by a dynamometer operatively arranged with the vehicle and (ii) data indicative of a load due to actual road grade;
- and
- controlling an accelerator pedal, an accelerator pedal signal, a fuel injector, a manifold pressure, a motor controller, or a throttle valve according to a speed schedule such that a corresponding dynamometer programmed with the dynamometer road load control parameters applies a load.
Dependencies are inferred from the claim text.