公开(公告)号：US20240352909A1

公开(公告)日：2024-10-24

申请号：US18305631

申请日：2023-04-24

Applicant: Ford Global Technologies, LLC

Inventor： Aed Dudar ,  Scott Alan Bohr

IPC: F02M25/08

CPC classification number: F02M25/0854 ,  F02M25/0809 ,  F02M25/0836

Abstract: Methods and systems are presented for onboard fuel vapor recovery for large heavy duty vehicles. In one example, the methods and systems include combining a plurality of carbon filled fuel vapor storage canisters in parallel and series to capture fuel vapors that may be generated via a heavy duty vehicle.

公开(公告)号：US12123377B2

公开(公告)日：2024-10-22

申请号：US18253085

申请日：2021-12-07

Applicant: AUDI AG ,  VOLKSWAGEN AKTIENGESELLSCHAFT

Inventor： Oliver Grunwald ,  Aleksandar Tesic

IPC: F02M25/08

CPC classification number: F02M25/0836 ,  F02M25/0809 ,  F02M25/0854

Abstract: A method for operating a fuel tank arrangement for a motor vehicle. The fuel tank arrangement has a fuel tank, a hydrocarbon filter and a pump. The fuel tank is fluidically connected via a tank shut-off valve to the hydrocarbon filter and the hydrocarbon filter is fluidically connected, on the one hand, via the pump to an external environment of the fuel tank arrangement and, on the other hand, via a purge valve to an intake tract of an internal combustion engine. A first leakage test mode is carried out when the pressure in the fuel tank is greater than a pressure threshold value, in which a shut-off valve arranged in terms of flow between the pump and the external environment is closed and the tank shut-off valve is opened.

公开(公告)号：US12123376B2

公开(公告)日：2024-10-22

申请号：US18188171

申请日：2023-03-22

Applicant: Ford Global Technologies, LLC

Inventor： Aed Dudar

IPC: F02M25/08 ,  F02D41/00 ,  F02M21/04

CPC classification number: F02M25/0818 ,  F02D41/003 ,  F02D41/0032 ,  F02M21/047 ,  F02M25/0809 ,  F02M25/0827 ,  F02M25/0836 ,  F02M25/0854

Abstract: Methods and systems for diagnosing operation of an evaporative emissions system are described. The methods and systems may include increasing an amount of vacuum stored in an evaporative emissions system during discontinuously operating an engine in a boosted operating mode. Storing vacuum allows the evaporative emissions system to reach a desired vacuum level to verify absence of an evaporative emissions system breech.

公开(公告)号：US12098692B2

公开(公告)日：2024-09-24

申请号：US17827995

申请日：2022-05-30

Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA

Inventor： Atsuya Hidai ,  Hisatoshi Kinoshita ,  Kazuteru Iwamoto ,  Atsushi Hirano ,  Tatsuya Kasahara

IPC: F02M25/08

CPC classification number: F02M25/0809 ,  F02M25/089

Abstract: A straddled vehicle on which a part used for performing an inspection for a leak of gas from an evaporative emission system is mounted such that a weight balance of the straddled vehicle is maintained and mass concentrates includes a canister-integrated-leak-detection device that detects a leak of gas from an evaporative emission system. The canister-integrated-leak-detection device configured in a state where at least one of a vent valve or a suction pump is integrated with a canister is supported via a common attaching member to intersect with at least one of a virtual-left-right-center plane that includes a center in a left-right direction and is perpendicular to the left-right direction, a virtual-front-rear-center plane that includes a center in a front-rear direction and is perpendicular to the front-rear direction, or a virtual-up-down-center plane that includes a center in an up-down direction and is perpendicular to the up-down direction in the vehicle.

公开(公告)号：US20230375429A1

公开(公告)日：2023-11-23

申请号：US18359049

申请日：2023-07-26

Applicant: Vitesco Technologies GmbH

Inventor： Thomas Pichler

IPC: G01L27/00 ,  F02M25/08

CPC classification number: G01L27/007 ,  F02M25/0854 ,  F02M25/0872 ,  F02M25/0809

Abstract: The invention relates to a method and a device for pressure sensor diagnosis in a tank venting system of a motor vehicle operated by an internal combustion engine, wherein the tank venting system comprises an activated carbon filter, a purge line arranged between the activated carbon filter and an intake tract of the motor vehicle, a tank venting valve arranged in the purge line and a pressure sensor arranged in the purge line, and wherein the method comprises the following steps:



measuring a pressure prevailing in the purge line by means of the pressure sensor to determine a starting pressure,
classifying the starting pressure into one of a plurality of pressure ranges depending on the amplitude of the starting pressure,
carrying out a pressure sensor diagnosis using a diagnosis algorithm which is associated with the pressure range in which the starting pressure lies.

公开(公告)号：US11814027B2

公开(公告)日：2023-11-14

申请号：US17665100

申请日：2022-02-04

Applicant: Toyota Motor Engineering & Manufacturing North America, Inc

Inventor： Giorgio L Zoia ,  Takehito Yokoo

IPC: B60W20/50 ,  B60W10/06 ,  B60W10/08 ,  B60W20/16 ,  B60W50/02 ,  F02D41/00 ,  F02M25/08 ,  B60W50/029

CPC classification number: B60W20/50 ,  B60W10/06 ,  B60W10/08 ,  B60W20/16 ,  B60W50/0205 ,  F02D41/0037 ,  F02M25/0809 ,  B60W2050/0297 ,  B60W2510/0638 ,  B60W2510/0657 ,  B60W2710/0644 ,  B60W2710/0666 ,  B60Y2200/92 ,  F02M2025/0845

Abstract: A vehicle, a vehicle fuel reactant leak detection system, a computer program product, and a computer implemented method of detecting leakage of a fuel reactant from a vehicle. The vehicle includes one or more fuel cell modules, a fuel supply source to supply a fuel reactant to the one or more fuel cell modules via a high-pressure fuel supply line, a fuel supply valve configured to open and close fuel reactant flow through the high-pressure fuel supply line, and a computing device, operatively connected to the fuel supply source. The computing device includes one or more processors caused to conduct, in response to a detection as sensor data of pressure in the high-pressure fuel supply line when the vehicle engine is in a non-operating state, fuel pressure analysis of the sensor data, and detect, based on the fuel pressure analysis, leakage of the fuel reactant at the fuel supply valve.

公开(公告)号：US20230250779A1

公开(公告)日：2023-08-10

申请号：US18300910

申请日：2023-04-14

Applicant: Vitesco Technologies GmbH

Inventor： Thomas Pichler ,  Thomas Koenig ,  Dirk Jürgensen

IPC: F02M25/08

CPC classification number: F02M25/0809 ,  F02M25/0836 ,  F02M25/089

Abstract: A method for diagnosing a purge line path of a tank ventilation system of a motor vehicle operated by an internal combustion engine is provided. The purge line path extends between a fuel vapor retention filter and an intake manifold of the motor vehicle, and includes a tank ventilation valve, a pressure sensor, a purge line path region arranged upstream of the pressure sensor, a purge line path region arranged downstream of the pressure sensor, a full load purge path arranged between the tank ventilation valve and the intake manifold, and a part load purge path arranged between the tank ventilation valve and the intake manifold. A plurality of part diagnoses are carried out temporally one after another for diagnosing the purge line path in the case of an active tank ventilation function, and pressure signals measured by the pressure sensor are evaluated within the context of the part diagnoses.

公开(公告)号：US20190242331A1

公开(公告)日：2019-08-08

申请号：US16329920

申请日：2017-06-21

Applicant: AISAN KOGYO KABUSHIKI KAISHA

Inventor： Nobuhiro KATO

IPC: F02M25/08 ,  B60K15/035

CPC classification number: F02M25/0809 ,  B60K15/03504 ,  B60K2015/03514 ,  F02M25/08 ,  F02M25/0836 ,  F02M25/089

Abstract: An evaporated fuel processing device may include: a canister that communicates with a fuel tank though a tank passage, communicates with an intake passage of an engine through a purge passage, and communicates with open air through an open air passage; a control valve that switches between a closed state of closing the purge passage and an open state of opening the same; a pump that changes a pressure in a communicating space in a case where the control valve is in the closed state, the communicating space defined by the fuel tank, the tank passage, the canister, the open air passage, and the purge passage on a side closer to the canister relative to the control valve; a pressure detector disposed in the communicating space; and a determining unit that determines the evaporated fuel processing device is not operating normally by using a pressure detection result by the pressure detector in a state where the control valve is in the closed state and the pressure in the communicating space is changed by the pump.

公开(公告)号：US20190184816A1

公开(公告)日：2019-06-20

申请号：US16220052

申请日：2018-12-14

Applicant: Plastic Omnium Advanced Innovation and Research

Inventor： Antoine CHAUSSINAND ,  Jules-Joseph Van Schaftingen ,  David Hill ,  Paul Daniel Reuther

IPC: B60K15/035 ,  F02M25/08 ,  G01L19/08 ,  G01N7/14

CPC classification number: B60K15/03504 ,  B60K2015/0319 ,  B60K2015/03561 ,  F02M25/0809 ,  G01L19/083 ,  G01N7/14

Abstract: Determining the thermodynamic state of fuel includes opening the venting connection to release the tank pressure while monitoring the derivative pressure (dP/dt), closing the venting connection when one of the following conditions is met, the derivative pressure (dP/dt) is lower than a predetermined threshold DP1 or the opening time Δt1 reaches a predetermined value, if the closing of the venting connection occurs when the opening time Δt1 reaches the said predetermined value, determining that the fuel is boiling and aborting the method if the closing of the venting connection occurs when the derivative pressure (dP/dt) is lower than the said threshold DP1, measuring an initial tank pressure at the closing of the venting connection, measuring the final tank pressure after a closure time Δt2, calculating the pressure variation (ΔP/Δt2), comparing the pressure variation (ΔP/Δt2) with a first threshold PV1, if the pressure is lower then aborting the method.

公开(公告)号：US20180245545A1

公开(公告)日：2018-08-30

申请号：US15966755

申请日：2018-04-30

Applicant: Eaton Corporation

Inventor： Robert P. Benjey

IPC: F02M25/08 ,  F02D41/00 ,  F02D19/06

CPC classification number: F02M25/0818 ,  F02D19/0628 ,  F02D41/0032 ,  F02D41/004 ,  F02D41/0045 ,  F02D2200/0602 ,  F02D2200/0606 ,  F02D2200/0611 ,  F02M25/0809 ,  F02M25/0872 ,  F02M25/089

Abstract: A fuel vapor management system for a vehicle includes a vehicle fuel pump assembly and a fuel volatility sensor system having a test chamber and a valve. The test chamber is fluidly coupled to the fuel pump assembly to receive a flow of fuel therefrom, the valve configured to selectively isolate and seal a portion of the fuel flow within the test chamber to determine fuel volatility of the portion of the fuel flow.