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Load machine for test bench for combustion engine

A heat engine and test bench technology, applied to internal combustion engine testing, electric components, electromechanical devices, etc., can solve problems such as difficult cooling, difficult DC motors, and rapid heating

Inactive Publication Date: 2002-07-03
BASF AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In addition, it is difficult to use DC motors on test benches for heat engines, because consideration must be given to the operation of the motor's slides or brushes in an oily environment
In addition, the rotor of the asynchronous motor has a large inertia, heats up quickly, and is difficult to cool because it is a rotating part.

Method used

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  • Load machine for test bench for combustion engine
  • Load machine for test bench for combustion engine
  • Load machine for test bench for combustion engine

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Experimental program
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Embodiment Construction

[0037] will refer to Figure 1 to Figure 3 , describing a first embodiment of the machine of the invention.

[0038] The machine comprises a casing 1 whose side wall 1a is in the shape of a centrally perforated disc and whose longitudinal wall 1b is cylindrical. A rotating shaft 2 is installed through the side wall 1a of the casing 1 through a rolling bearing 3 . Shaft 2 is used to connect the heat engine to be tested to one of its ends.

[0039] The shaft 2 is connected in rotation with a ferromagnetic toothed rotor 4 extending inside the casing 1 . figure 2 As shown more clearly in , the rotor 4 comprises a circular central portion of small diameter from which radially extends a series of arms 4a spaced at uniform angular intervals around the axis of the shaft 2 . For example, the rotor 4 has twelve arms 4a. Although not shown in the figure, the arms 4a may be connected by fan-shaped connecting plates with a thinner thickness.

[0040] The circular induction coil 5 is ...

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PUM

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Abstract

The invention concerns a charging machine for a heat engine test stand, comprising at least braking means operating on Foucault currents associated with at least driving electric means, said braking means comprising a ferromagnetic toothed rotor (12) integral with a shaft (2) mounted rotatable through a housing (1) containing at least an induction coil (5) borne by an internal peripheral zone of the housing, to generate a magnetic field designed to be traversed by the rotor to generate Foucault currents, so as to brake the rotation of the shaft, said shaft being arranged to be coupled with the heat engine to be tested. The invention is characterised in that the electric driving means constitute an electric motor with variable reluctance.

Description

technical field [0001] The invention relates to a load machine for a test stand of a heat engine such as a diesel or gasoline engine or a gas engine. Background technique [0002] When the heat engine is connected to a load machine on the test bench, the load machine must be able to stop the rotation of the engine shaft to simulate the operation of the engine at different engine speeds with ground friction, air friction, and vehicle inertia and speed. , [0003] Hydraulic brakes are known, which have the advantage of being relatively small in inertia and size relative to the braking power they can deliver, and of being inexpensive. However, hydraulic brakes are used less and less because of the slow response time of the regulator acting on the fluid, which prevents precise adjustment. Therefore, hydraulic brakes are not suitable for heat engines equipped with ignition and injection calculation means that require rather precise adjustments in order to adjust the maps (mise ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/04G01L3/22H02K7/104
CPCH02K7/104G01L3/22
Inventor 丹尼尔·德雷克安东尼·勒索布尔哈尼德·本·艾哈迈德洛朗·普雷万德
Owner BASF AG