US 8,505,374 B1 · Portable on vehicle dynamometer

Abstract

A portable on vehicle dynamometer (12) has a rigid frame (64), a load shaft (16), and an eddy current brake (24) with a stator (56) connected to the rigid frame (64) and a rotor (54) connected to the load shaft (16). A hub coupling (18) is secured to a first end of the load shaft (16) and connected to the drive shaft. The rigid frame (64) has two outwardly extending support arms (30) for securing in outwardly extending, fixed positions. Two roller assemblies (46) are mounted to a lower end of the rigid frame (64) for multidirectional movement of the dynamometer (12). Preferably the eddy current brake (24) comprises a cylindrically-shaped rotor drum (54) extending exteriorly around the stator (56), and the stator (56) comprises a plurality of stator coils (94) extending exteriorly around the load shaft (16), spaced apart from an interior of the rotor drum (54).

Claims6

Dependent claims

A portable on vehicle dynamometer for determining power output from a drive shaft, comprising:

a rigid frame;
a load shaft rotatably coupled to said rigid frame;
an eddy current brake having a stator connected to said rigid frame, and a rotor connected to said load shaft;
a hub coupling secured to a first end of said load shaft and connected directly to the drive shaft for transferring power to the load shaft, wherein said hub coupling, said drive shaft and said load shaft co-axially rotate;
said rigid frame having two outwardly extending support arms, and arm locks which secure said outwardly extending support arms in fixed positions;
support feet assemblies mounting to respective ones of outer ends of said support arms;
and
two roller assemblies mounted to a lower end of said rigid frame, providing multidirectional movement of said dynamometer.

5 more elements

Dependencies are inferred from the claim text.

Portable on vehicle dynamometer

Life of this patent

Portable on vehicle dynamometer

Life of this patent

Abstract

Claims6