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Heavy duty engine regulatory testing apparatus and method

An engine, test program technology, applied in the field of measuring exhaust emissions and brake specific fuel consumption of heavy-duty engines, can solve problems such as limitations of successful application

Pending Publication Date: 2022-02-18
HORIBA INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The third type of regulatory testing, "in-use" testing, has historically been difficult for regulators and engine manufacturers or original equipment manufacturers (OEMs) because it requires removing the engine to be tested from the vehicle chassis. remove
[0009] Successful application of practical Portable Emissions Measurement System (PEMS) testing of heavy vehicles in the US has been limited by overly restrictive requirements for valid test points in relation to the test procedures employed

Method used

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  • Heavy duty engine regulatory testing apparatus and method
  • Heavy duty engine regulatory testing apparatus and method
  • Heavy duty engine regulatory testing apparatus and method

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Embodiment Construction

[0021] Various embodiments of the disclosure are described herein. However, the disclosed embodiments are exemplary only and other embodiments may take various and alternative forms not expressly illustrated or described. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one of ordinary skill in the art to variously employ the present invention. As will be understood by persons of ordinary skill in the art, various features shown and described with reference to any one of the figures may be combined with features shown in one or more other figures to produce a feature not explicitly shown or described. Example. The combinations of features shown provide representative embodiments for typical applications. However, various combinations and...

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Abstract

A method for testing an engine in a vehicle includes arranging a bath separated from the vehicle and configured to cool a driveline component of the vehicle, adjusting a temperature of the driveline component to a target temperature, and responsive to the driveline component achieving the target temperature, operating the engine according to a mapping procedure, and controlling the bath to maintain the temperature of the driveline component at the target temperature during the operating. The method further includes measuring heat transfer from the driveline component to the bath during the operating, and calculating torque loss or energy loss of the driveline component during the operating based on the heat transfer.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 62 / 840,227, filed April 29, 2019, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present disclosure belongs to the technical field of measurement and analysis of automobile exhaust emissions and energy efficiency measurement of internal combustion engines. More specifically, it is in the field of measuring exhaust emissions and brake-specific fuel consumption of heavy-duty engines (HDEs), ie internal combustion engines (ICEs) typically found in trucks. Background technique [0004] In the United States, heavy duty engines are found in trucks ranging in size from pickups to Class 8 tractors with tractor / trailer combined gross vehicle weights of up to 85,000 lbs. Engines are tested and certified to meet U.S. Environmental Protection Agency (EPA) and California EPA emissions compliance requir...

Claims

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Application Information

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IPC IPC(8): G01M15/04G01M15/05
CPCG01M99/002G01M13/02G01M15/02G01M15/05
Inventor 利奥·阿方斯·杰勒德·布雷顿
Owner HORIBA INSTR
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