公开(公告)号：US11661868B2

公开(公告)日：2023-05-30

申请号：US17728888

申请日：2022-04-25

Applicant: Cummins Inc.

Inventor： Rohan Achyut Gumaste ,  Mark W. Pyclik

IPC: F02D41/24 ,  F01M1/20 ,  F02D41/22 ,  F01M13/00

CPC classification number: F01M1/20 ,  F02D41/22 ,  F02D41/2477 ,  F01M2013/0083 ,  F02D2200/024

Abstract: Systems, devices and methods for diagnosing malfunctioning in a crankcase ventilation (CCV) system are provided. A controller includes a processor and a memory storing instructions that cause the processor to: receive a plurality of pressure values including (i) a first pressure value indicative of a pressure of fluid flowing from a crankcase to a breather assembly of a system, (ii) a second pressure value indicative of a pressure of fluid flowing through a first tube coupled to the breather assembly, and (iii) a third pressure value indicative of a pressure of fluid flowing through a second tube coupled to the breather assembly; determine a pair of pressure differences based on the first pressure value, the second pressure value, and the third pressure value; and detect a malfunctioning in the CCV system based on the pair of pressure differences.

公开(公告)号：US11649745B2

公开(公告)日：2023-05-16

申请号：US17378092

申请日：2021-07-16

Applicant: Volkswagen Aktiengesellschaft

Inventor： Julian Gens ,  Christian Ledwig

IPC: F01M1/20 ,  F01P3/08 ,  F01M1/08

CPC classification number: F01M1/20 ,  F01M1/08 ,  F01P3/08 ,  F01M2250/60 ,  F01M2250/64

Abstract: A diagnostic method for an oil piston cooling jet valve of an oil pressure system of an internal combustion engine of a motor vehicle, including: Driving the OPCJ valve for detecting oil pressure diagnostic data if multiple enabling conditions have been met, the multiple enabling conditions including: Presence of a stationary operation of the internal combustion engine; presence of a predetermined operating range; presence of an oil temperature within a predetermined oil temperature range; prevention of a scheduled driving of the OPCJ valve for regular piston cooling; and prevention of an error of the oil pressure system. The diagnostic method further including: Determining whether an oil pressure measuring point is within a predefined oil pressure measuring point range. The invention further relates to a diagnostic device, a control unit and a motor vehicle, which are each suitable or configured for carrying out the method.

公开(公告)号：US11643952B2

公开(公告)日：2023-05-09

申请号：US17730762

申请日：2022-04-27

Applicant: Hyundai Motor Company ,  Kia Corporation

Inventor： Bong Uk Bae ,  Se Hwan Jo ,  Ki Bum Kim ,  Jin Young Hwang ,  Seong Min Son

IPC: F01M1/16 ,  F01M1/02 ,  F01M1/20

CPC classification number: F01M1/16 ,  F01M1/02 ,  F01M1/20 ,  F01M2001/0215 ,  F01M2250/60

Abstract: A method of controlling an electric oil pump (EOP) for a vehicle includes, if a current temperature of oil is lower than a reference temperature, determining whether an EOP RPM is lower than a minimum driving RPM, if the EOP RPM is lower than the minimum driving RPM, applying a first reduction rate for a first setting time and reducing a target line pressure and an instruction RPM of the EOP, if the EOP RPM is equal to or higher than the minimum driving RPM, determining whether vibration of the EOP RPM is generated above a reference vibration, and if the vibration is generated above the reference vibration, applying a second reduction rate for a second setting time and reducing the target line pressure or the instruction RPM of the EOP.

公开(公告)号：US20210079819A1

公开(公告)日：2021-03-18

申请号：US16993579

申请日：2020-08-14

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： Min Yong LEE ,  Seong Sik KIM ,  Jun Sik PARK ,  Hyun Kyu LIM

IPC: F01M1/16 ,  F01M1/02 ,  F01M1/20

Abstract: A method of controlling an oil pump of a vehicle includes: acquiring, by a controller, information on an engine operating state or a driving condition detected by a driving information detection part; determining, by the controller, whether a predetermined condition of an alternate mode is satisfied on the basis of the acquired information on the engine operating state or the driving condition; and, when the condition of the alternate mode is satisfied, sequentially performing, by the controller, a high-pressure operation control that controls an operation of an oil pump system so as to an oil pressure of an engine to converge on a predetermined target high-pressure value and a low-pressure operation control that controls the oil pressure of the engine to converge on a predetermined target low-pressure value.

公开(公告)号：US10927726B2

公开(公告)日：2021-02-23

申请号：US15890075

申请日：2018-02-06

Applicant: Ford Global Technologies, LLC

Inventor： Aed M. Dudar

IPC: F01M1/18 ,  F01M1/02 ,  F01M1/20

Abstract: Methods and systems are provided for diagnosing variable oil pump degradation. In one example, a method may include cranking an engine with a motor and monitoring the motor current draw from a battery during cranking. The method may indicate degradation of a variable oil pump coupled to the engine by comparing the motor current draw with a baseline current level.

公开(公告)号：US20200277908A1

公开(公告)日：2020-09-03

申请号：US16877908

申请日：2020-05-19

Applicant: Ford Global Technologies, LLC

Inventor： Chris Paul Glugla

IPC: F02D41/00 ,  F01N3/10 ,  F01L13/00 ,  B60W30/188 ,  B60W10/10 ,  B60W10/06 ,  F01L1/18 ,  F02D13/06 ,  F01M1/20

Abstract: Systems and methods for operating an engine with deactivating and non-deactivating valves are presented. In one example, estimates of engine fuel consumption for operating the engine with a plurality of cylinder modes or patterns while a transmission is engaged in different gears are determined and are used as a basis for deactivating engine cylinders.

公开(公告)号：US20200217263A1

公开(公告)日：2020-07-09

申请号：US16631361

申请日：2018-05-04

Applicant: LS MTRON LTD.

Inventor： Ji Yeong PARK ,  Kyung Nyung WOO

IPC: F02D41/22 ,  A01D41/127 ,  F01M1/20 ,  F01P11/16 ,  G01M15/05 ,  G01M15/09 ,  G01M15/04 ,  G06Q50/02 ,  G05B23/02

Abstract: An agricultural work vehicle according to an aspect of the invention that can monitor a state of the agricultural work vehicle when the agricultural work vehicle performs agricultural work using a working machine which is attached thereto includes: a vehicle body; a working machine that is attached to the front or rear of the vehicle body and performs agricultural work; an engine that generates a driving force for movement of the vehicle body and work of the working machine; and a monitoring device that determines at least one of whether there is an abnormality in a temperature of a coolant for cooling the engine, whether there is an abnormality in a pressure of an engine oil supplied to the engine, and whether there is an abnormality in the engine when the working machine performs work using the driving force.

公开(公告)号：US10519824B2

公开(公告)日：2019-12-31

申请号：US15757028

申请日：2017-03-02

Applicant: MAZDA MOTOR CORPORATION

Inventor： Tomohiro Koguchi ,  Kenta Honda

IPC: F01M1/16 ,  F01M1/20 ,  F01M1/12 ,  F01L1/344 ,  F01M1/02 ,  F01M1/06

Abstract: Disclosed herein is an oil supply device for an internal combustion engine, which includes a control unit that controls activation of an electric oil pump and that functions as either a reserve oil level estimator for estimating the level of oil reserved in auxiliary chambers or a reserve oil level detector for detecting the level of the oil reserved there. When it is estimated or detected that the level of the oil reserved in the auxiliary chambers has become equal to or less than a predetermined reserve oil level while the internal combustion engine is OFF, the control unit performs an oil replenishment control to replenish the auxiliary chambers with the oil by activating the electric oil pump.

公开(公告)号：US20190285007A1

公开(公告)日：2019-09-19

申请号：US15923363

申请日：2018-03-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Azeem Sarwar ,  Syed B. Mehdi ,  Xiangxing Lu ,  Bryan K. Pryor ,  Shanshan L. Peer

IPC: F02D35/00 ,  F02D41/22 ,  F01M1/20

Abstract: A method and system of diagnosing a lubrication system of an engine includes determining a lubrication system fault and controlling an engine in response to the fault. The method is operative to first determine a poor state of health for a lubrication system, then determine an oil degradation or lube system fault. In response to a lube system fault, engine operation is altered in order to reduce the negative effects of the lube system fault such as increasing minimum idle speed in response to reduced oil pressure.

公开(公告)号：US10352207B2

公开(公告)日：2019-07-16

申请号：US15254778

申请日：2016-09-01

Applicant: SUZUKI MOTOR CORPORATION

Inventor： Yasuomi Ishihara ,  Hideto Nakamura

IPC: F01M1/16 ,  F02B75/00 ,  F02B61/04 ,  F01M1/20 ,  F01M1/10 ,  F01M9/10 ,  F02M35/10 ,  F02B75/02

Abstract: An engine case includes bearings, an oil pump, lubricating oil passages, and a relief device. The bearings rotatably support a crankshaft and a camshaft. The oil pump and the lubricating oil passages are configured to pressure-feed lubricating oil to the bearings. The relief device is configured to adjust a pressure of the lubricating oil. The lubricating oil passages include main lubricating oil passages. The main lubricating oil passages include communication portions linearly formed with extending portions. The communication portions communicate between the respective bearings of the crankshaft and the camshaft from outside the engine case. The extending portions extend from outside the engine case to the bearing of the camshaft. The relief device is disposed having a relief valve and a relief hole at the extending portions.