Exhaust treatment apparatus
First Claim
1. An exhaust treatment apparatus for treating exhaust discharged from an exhaust port of an internal combustion engine when testing the internal combustion engine, comprising:
- an exhaust inlet portion having an inlet port through which exhaust discharged from the exhaust port is introduced; and
a displacement mechanism which displaces the exhaust inlet portion between a first position proximate the exhaust port and a second position spaced away from the exhaust port; and
a test bed having a restriction mechanism which restricts rocking of the internal combustion engine;
wherein the test bed is equipped with the displacement mechanism;
and wherein the displacement mechanism comprises an arm supported on the test bed in such a way as to be able to rotate around a predetermined rotational axis; and
an actuator for rotating the arm,wherein the exhaust inlet portion is provided on the arm.
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Accused Products
Abstract
An exhaust treatment apparatus has an arm rotatably supported on a test bed and a masking section provided at the distal end portion of the arm. The masking section is connected to an exhaust treatment section via an exhaust pipe. When the arm is turned to a test position from a standby position, the masking section faces an internal combustion engine with a predetermined gap therebetween. In this state, a masking-section cylinder presses the masking section toward the internal combustion engine to set the masking section in close contact with the internal combustion engine. As a result, the exhaust port of the internal combustion engine is connected to an inlet port provided in the masking section. Exhaust gas discharged from the exhaust port is supplied to the exhaust treatment section through the inlet port, the masking section and the exhaust pipe, and is treated in the exhaust treatment section.
15 Citations
11 Claims
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1. An exhaust treatment apparatus for treating exhaust discharged from an exhaust port of an internal combustion engine when testing the internal combustion engine, comprising:
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an exhaust inlet portion having an inlet port through which exhaust discharged from the exhaust port is introduced; and a displacement mechanism which displaces the exhaust inlet portion between a first position proximate the exhaust port and a second position spaced away from the exhaust port; and a test bed having a restriction mechanism which restricts rocking of the internal combustion engine; wherein the test bed is equipped with the displacement mechanism; and wherein the displacement mechanism comprises an arm supported on the test bed in such a way as to be able to rotate around a predetermined rotational axis; and an actuator for rotating the arm, wherein the exhaust inlet portion is provided on the arm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An exhaust treatment apparatus comprising:
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an exhaust inlet portion having an inlet port through which exhaust discharged from the exhaust port is introduced; and a displacement mechanism which displaces the exhaust inlet portion between a first position proximate the exhaust port and a second position spaced away from the exhaust port; and a test bed having a restriction mechanism which restricts rocking of the internal combustion engine; wherein the test bed is equipped with the displacement mechanism; and wherein the displacement mechanism comprises an arm supported on the test bed in such a way as to be able to rotate around a predetermined rotational axis; and a test bed having a restriction mechanism which restricts rocking of the internal combustion engine; wherein the test bed is equipped with the displacement mechanism; and wherein the displacement mechanism comprises; a slide mechanism provided upright on the test bed; and an arm which is supported in such a manner as to be liftable up and down with respect to the slide mechanism and is lifted up and down by the slide mechanism, wherein the exhaust inlet portion is provided on the arm.
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Specification