# US 10,502,645 B2 · Dynamometer device

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- Number: US 10,502,645 B2
- Document ID: US10502645B2
- Status: Granted
- Kind: B2
- Application number: 16/309,586
- Filed: 2017-02-27
- Published: 2019-10-10
- Granted: 2019-12-10
- Earliest claimed: 2016-06-15
- Assignees: Meidensha Corporation
- Applicants: Meidensha Corporation
- Inventors: Takahiro Shimizu; Shigeo Watanabe
- Web page: https://patentgrep.com/patent/US10502645B2

## CPC

- G01L 3/00: Measuring torque, work, mechanical power, or mechanical efficiency, in general
- F01P 3/00: Liquid cooling
- G01L 3/02: Rotary-transmission dynamometers
- G01L 3/16: Rotary-absorption dynamometers, e.g. of brake type
- G01M 15/02: Details or accessories of testing apparatus
- F01P 2003/006: {the liquid being oil}
- G01M 17/007: Wheeled or endless-tracked vehicles (G01M17/08 takes precedence)
- G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G)
- F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28)
- G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR

## Abstract

In a dynamometer device (1), a dynamometer (5) is placed on a dynamometer-side bed (6), and the dynamometer-side bed (6) is stacked on a tank-side bed (15) located on the top part of a bed tank (3). The dynamometer (5) is connected to the bed tank (3) by an oil discharge pipe (9) which returns a cooling oil (2) to the bed tank (3) from the dynamometer (5). The oil discharge pipe (9) passes through an interface (23) between the dynamometer-side bed (6) and the tank-side bed (15), and extends into the bed tank (3).

## Claims

### Claim 1

A dynamometer device, comprising:
a tank provided with, at a top part thereof, a flat tank-side bed including an opening part, and storing a cooling medium;
a dynamo body provided on a flat dynamometer-side bed forming an interface between the dynamometer-side bed and the tank-side bed, the tank-side bed and the dynamometer-side bed being sealed by a seal surrounding the opening part; and
a pipe for returning the cooling medium from the dynamo body to the tank,
wherein the pipe communicates with a flow passage extending from an upper part of the dynamo body, is attached to the dynamometer-side bed, and passes through the interface, extends through the opening part located inside the seal and is opened inside the cooling medium inside the tank.

### Claim 2 (depends on 1)

The dynamometer device according to claim 1, wherein the pipe has a cylindrical shape in which a distal end of the pipe is closed, and a plurality of oil discharge holes for discharging the cooling medium in a radial direction of the pipe are provided on an outer peripheral surface of the pipe.