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Evaporative fuel vapor emission control systems

一种蒸发排放、蒸气的技术，应用在装料系统、燃料中加入非燃料物质、气体处理等方向，能够解决低流动限制、削弱强度等问题

Active Publication Date: 2020-02-11
INGEVITY SOUTH CAROLINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In other words, despite its ability to control emissions, the '195 patent teaches that the relatively high M / m ratio of 2GK-C7 is unsuitable for larger diameter pellets, which while providing lower flow restriction Will weaken strength and has a high retention rate

Method used

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  • Evaporative fuel vapor emission control systems
  • Evaporative fuel vapor emission control systems
  • Evaporative fuel vapor emission control systems

Examples

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Embodiment

[0218] Determination of apparent density

[0219] The standard method ASTM D 2854-09(2014) (hereinafter referred to as "the standard method") can be used to determine the apparent density of particulate adsorbents, considering the specified minimum ratio10 of the diameter of the graduated cylinder to the average particle diameter of the granular material, where the average particle diameter is calculated according to Measured by specified standard screening methods.

[0220] Determination of macroscopic pore volume

[0221] Macroscopic pore volume was measured by mercury intrusion porosimetry ISO 15901-1:2016. The equipment used in the examples was a Micromeritics Autopore V (Norcross, GA). The samples used were approximately 0.4 g in size and preconditioned in an oven at 105°C for at least 1 hour. The mercury surface tension and contact angle used in the Washburn equation are 485 dynes / cm and 130°, respectively. Macroscopic pores as referred to herein are those having a dia...

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Abstract

The present disclosure describes an evaporative emission control canister system that includes: one or more canisters comprising at least one vent-side particulate adsorbent volume comprising a particulate adsorbent having microscopic pores with a diameter of less than about 100 nm; macroscopic pores having a diameter of about 100-100,000 nm; and a ratio of a volume of the macroscopic pores to a volume of the microscopic pores that is greater than about 150%, and having a retentivity of about 1.0 g / dL or less. The system may further include a high butane working capacity adsorbent. The disclosure also describes a method for reducing emissions in an evaporative emission control system.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application 62 / 521,912, filed June 19, 2017, and U.S. Provisional Patent Application 62 / 685,174, filed June 14, 2018, which are hereby incorporated by reference in their entirety for all purposes. Background technique [0003] 1. Discover the field. The present disclosure generally relates to a system including a particulate sorbent material and methods of using the same. More specifically, the present disclosure relates to a system including a low retention particulate sorbent material, and a method of using the low retention particulate sorbent material in an evaporative fuel vapor emission control system. [0004] 2. Background information. Evaporation of gasoline fuel from motor vehicle fuel systems is a major source of hydrocarbon air pollution. Such emissions can be controlled by a canister system that employs activated carbon to absorb fuel vapors pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/08B01D53/04
CPCB01D53/0407F02M25/089B01D2253/104B01D2253/106B01D2253/108B01D2253/11B01D2253/1124B01D2253/308B01D2253/311B01D2253/34B01D2257/7022B01D2259/40086F02M25/0854B01D53/0415B01D53/0438B01D2259/4516B01D2253/3425B01D2253/102B01D2259/41B01D2259/4145B01D53/02B01D2253/202B01D2253/116B01D2257/708
Inventor 蒂莫西·M·伯恩劳伦斯·H·希尔特齐克马尔塔·利昂·加西亚卡梅伦·I·汤姆森
Owner INGEVITY SOUTH CAROLINA
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