Noise minimization for evaporative canister ventilation valve cleaning

A ventilation valve, carbon canister technology, applied in engine components, machines/engines, charging systems, etc., to solve problems such as unsatisfactory emission levels, idle jitter, etc.

Active Publication Date: 2009-12-16
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improper operation of the purge valve can cause many undesirable conditions such as idling chatter, regular throttle chatter and / or undesired emission levels

Method used

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  • Noise minimization for evaporative canister ventilation valve cleaning
  • Noise minimization for evaporative canister ventilation valve cleaning
  • Noise minimization for evaporative canister ventilation valve cleaning

Examples

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Embodiment Construction

[0014] The following description is merely exemplary in nature and is not intended to limit the invention, its application or uses. For simplicity, the same reference numerals are used in the drawings to refer to the same parts. In this application, the phrase "at least one of A, B, and C" should be interpreted as a logical relationship (A or B or C) using the non-exclusive logical symbol "or". It should be understood that various steps within a method may be executed in different order without altering the principles of the present invention.

[0015] As used herein, the term "module" means an application-specific integrated circuit (ASIC), an electronic circuit, a processor (common, dedicated, or group) and memory, combinational logic, and / or other providing A suitable component for the described function.

[0016] now refer to figure 1 A vehicle 10 includes an engine 12 , an evaporative emissions control (EVAP) system 14 and a fuel system 16 . A throttle valve 18 is adj...

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PUM

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Abstract

The present invention relates to a noise minimization for evaporative canister ventilation valve cleaning. A control system comprising a detection module that detects at least one of a vehicle speed and an engine speed and a canister vent valve control module that selectively modulates the canister vent valve based on at least one of the vehicle speed and the engine speed. A method comprising detecting at least one of a vehicle speed and an engine speed and selectively modulating a canister vent valve based on at least one of the vehicle speed and the engine speed.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application 61 / 060,555, filed June 11, 2008, the disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates to a control system and method for operating a canister vent valve in an evaporative emissions system. Background technique [0004] The background description provided herein is for the purpose of generally presenting the context of the disclosure only. The work done by the inventors of the present application disclosed in the Background Art section and various sections of the specification cannot be regarded as the prior art at the time of filing the application, and cannot be taken as prior art, either expressly or implicitly, to destroy the scope of the present invention. Patentability. [0005] Vehicles often include fuel tanks that store liquid fuels, such as gasoline, diesel, methanol, and other fue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/08
CPCF02M25/089F02M25/0836
Inventor Z·王T·T·洪L·王G·L·罗杰斯S·A·克格贝恩W·R·凯曼
Owner GM GLOBAL TECH OPERATIONS LLC
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