Testing unit for testing a multi-cylinder engine

Patent metadata

Field	Value
Publication number	US-9804056-B2
Application number	US-201514670052-A
Country	US
Kind code	B2
Filing date	Mar 26, 2015
Priority date	Mar 27, 2014
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

The present invention provides a testing device testing a multi-cylinder engine including a plurality of ports including an intake port and an exhaust port in a pseudo driving state. The device includes a plurality of pressure inspection units and at least one opening/closing mechanism. Each of the plurality of pressure inspection units includes a pipeline connected to one of the plurality of ports, a sensor for detecting a pressure in the pipeline and a valve for opening/closing the pipeline. The opening/closing mechanism includes one actuator and a transmission mechanism connected to the actuator and transmitting a driving force of the actuator to an operation unit of each of the plurality of valves to open and close the plurality of valves.

First claim

What is claimed is:

1. A testing unit configured to test a multi-cylinder engine including a plurality of ports including an intake port and an exhaust port in a pseudo driving state, comprising:
a plurality of pressure inspection units; and
at least one opening/closing mechanism,
wherein each of said plurality of pressure inspection units includes:
a pipeline connected to one of the plurality of ports;
and
a valve for opening/closing the pipeline,
wherein the pipeline includes a mounting unit to which a sensor for detecting a pressure in the pipeline is mounted, the mounting unit being positioned between the valve and the intake port or the exhaust port;
wherein said opening/closing mechanism includes:
one actuator; and
a transmission mechanism connected to the actuator and transmitting a driving force of the actuator to an operation unit of each of the plurality of valves to open and close the plurality of valves,
wherein said transmission mechanism includes:
a plurality of link members which is moved by the driving force, each link member including an engaging unit; and
a plurality of handle members,
wherein one end portion of each handle member is connected to a corresponding operation unit, and
wherein the other end portion of each handle member is engaged with the corresponding engaging unit.

2. The testing unit according to claim 1 , wherein each of the plurality of ports includes a plurality of intake ports;
each pressure inspection unit of the plurality of pressure inspection units is provided on each intake port of the plurality of intake ports; and
said opening/closing mechanism is provided on each cylinder row.

3. The testing unit according to claim 1 , wherein
the operation unit comprises a valve shaft, to which the one end portion of each handle member is connected,
the transmission mechanism includes:
a slide member slidable in a cylinder row direction,
each link member is coupled to the slide member and rotating the handle member around the valve shaft in conjunction with slide of the slide member, and
the actuator is arranged on one end portion side in a cylinder row direction of the slide member and urges the slide member in the cylinder row direction.

4. The testing unit according to claim 1 , wherein each link member includes an upper part, an intermediate part and a lower part,
each link member is formed by bending the upper part, the intermediate part and the lower part in a crank shape, and
the lower part includes the engaging unit.

5. The testing unit according to claim 1 , wherein the sensor is mounted to the mounting unit.

6. The testing unit according to claim 1 , further comprising:
a support unit configured to support the plurality of pressure inspection units; and
a moving mechanism configured to move the support unit between an inspection position where the pipeline is connected to the port and a retreated position where the pipeline is spaced away from the port.

7. The testing unit according to claim 6 , further comprising:
a buffer mechanism provided between the support unit and the moving mechanism, wherein
the buffer mechanism connects the support unit and the moving mechanism so that support unit can be displaced relative to the moving mechanism.

8. The testing unit according to claim 6 , further comprising:
an elevation mechanism configured to elevate up/down the support unit as the moving mechanism; and
a buffer mechanism provided between the support unit and the elevation mechanism, wherein
the buffer mechanism connects the support unit and the elevation mechanism so that support unit can be displaced relative to the elevation mechanism.

Assignees

• Hirata Spinning

Inventors

• Sueoka Hisayuki
• Uchida Tsuyoshi

Classifications

• G01M15/05

  by combined monitoring of two or more different engine parameters · CPC title

• G01M15/106

  using pressure sensors · CPC title

• G01M15/08 Primary

  by monitoring pressure in cylinders · CPC title

• G01M15/09 Primary

  by monitoring pressure in fluid ducts, e.g. in lubrication or cooling parts · CPC title