公开(公告)号：US4620510A

公开(公告)日：1986-11-04

申请号：US544738

申请日：1983-10-24

Applicant: James J. Feuling

Inventor： James J. Feuling

IPC: F01L1/08 ,  F02B75/02

CPC classification number: F01L1/08 ,  F02B2075/025 ,  F02B2075/027 ,  Y10T74/2101

Abstract: This invention is directed to a novel camshaft for engine timing. The cam positions of the camshaft include secondary lobes in conjunction with normal primary lobes. The secondary lobes are positioned so that they precede their associated primary lobe during camshaft rotation. The secondary lobes cause an associated valve to open slightly and close completely prior to the normally expected valve opening caused by the primary lobe. This slight opening and closing creates a shock wave that aids the atomizing air and fuel mixing in the intake system prior to normal intake valve opening and enhances the scavenging of combustion gases during the exhaust cycle.

Abstract translation: 本发明涉及一种用于发动机定时的新型凸轮轴。 凸轮轴的凸轮位置包括与正常主瓣结合的次级凸角。 在凸轮轴旋转期间，第二个叶片定位成使它们在相关联的主叶片之前。 在由主瓣引起的正常预期的阀门打开之前，次级叶片使相关阀门略微打开并完全关闭。 这种轻微的打开和关闭产生冲击波，其在正常进气门打开之前有助于进气系统中的雾化空气和燃料混合，并且增强在排气循环期间燃烧气体的清除。

公开(公告)号：US4517934A

公开(公告)日：1985-05-21

申请号：US170073

申请日：1980-07-18

Applicant: Stanislav Papez

Inventor： Stanislav Papez

IPC: F01L1/047 ,  F01L1/34 ,  F01L13/00 ,  F01L1/08

CPC classification number: F01L13/0015 ,  F01L1/047 ,  F01L1/34 ,  F01L13/0057 ,  F01L1/352 ,  F01L2001/0473 ,  F01L2820/032

Abstract: A camshaft for the drive of an internal combustion engine has a hollow shaft carrying one or more cams or partial cams and an inner shaft disposed within the hollow shafts and rotatable relative to the hollow shaft. The inner shaft has one or more cams or partial cams disposed outside the hollow shaft and attached for rotation with the inner shaft through clearances in the hollow shaft. A camshaft driving arrangement includes a camshaft timing gear coupled with both shafts and a device responsive to a parameter characteristic of the operating conditions of the drive for adjusting the rotational position of either one or both of the inner and hollow shafts relative to the camshaft timing gear. The adjusting device includes an electric motor fixed on the timing gear and controlled by electrical signals. The motor acts on a threaded spindle which meshes with a counterthread surface on the inner shaft or the outer shaft, or both, for adjusting the relative position of the shaft or shafts relative to top dead center.

Abstract translation: 用于内燃机的驱动的凸轮轴具有承载一个或多个凸轮或部分凸轮的中空轴和设置在中空轴内并可相对于中空轴旋转的内轴。 内轴具有一个或多个凸轮或部分凸轮，其设置在中空轴的外部，并且通过中空轴中的间隙而附接以与内轴一起旋转。 凸轮轴驱动装置包括与两个轴联接的凸轮轴正时齿轮和响应于驱动器的操作条件的参数特性的装置，用于调节内轴和空心轴中的一个或两个相对于凸轮轴正时齿轮的旋转位置 。 调节装置包括固定在定时齿轮上并由电信号控制的电动机。 电动机作用在与内轴或外轴或两者上的反面表面啮合的螺纹心轴上，用于调节轴或轴相对于上止点的相对位置。

公开(公告)号：US4280451A

公开(公告)日：1981-07-28

申请号：US143153

申请日：1980-04-23

Applicant: Edward J. Moore

Inventor： Edward J. Moore

IPC: F02B1/04 ,  F02B3/06 ,  F02B41/02 ,  F02B41/04 ,  F02B75/02 ,  F01L1/04 ,  F01L1/08

CPC classification number: F02B75/02 ,  F02B41/04 ,  F02B1/04 ,  F02B2075/027 ,  F02B3/06

Abstract: An internal combustion engine is run at high compression ratios by always starting the compression of the charge at sub-atmospheric pressure, thus allowing high compression ratios without excessive pressure at the end of the compression stroke. Higher compression ratios allow higher expansion ratios and increased efficiency. The method is suitable for use with both spark ignition and compression ignition internal combustion engines.

Abstract translation: 通过总是在低于大气压的压力下开始压缩电荷，内燃机以高压缩比运行，从而允许高压缩比，而在压缩行程结束时没有过大的压力。 较高的压缩比允许更高的膨胀比和更高的效率。 该方法适用于火花点火和压缩点火内燃机。

公开(公告)号：US4114371A

公开(公告)日：1978-09-19

申请号：US672333

申请日：1976-03-31

Applicant: Munekazu Matsuda

Inventor： Munekazu Matsuda

IPC: F01L1/08 ,  F01L1/44 ,  F02B1/06 ,  F02B15/00 ,  F02B75/02 ,  F02B75/16 ,  F02D33/00 ,  F02M13/02 ,  F02B75/10

CPC classification number: F02B75/16 ,  F01L1/44 ,  F02B1/06 ,  F02B2075/027

Abstract: An internal combustion engine wherein a single cylinder is provided with a rich fuel-air mixture inlet valve for supplying rich fuel-air mixtures from a source of supply of rich fuel-air mixtures and a lean fuel-air mixture inlet valve for supplying lean fuel-air mixtures from a source of supply of lean fuel-air mixtures. The rich fuel-air mixture inlet valve and the lean fuel-air mixture inlet valve alternately open to alternately supply rich fuel-air mixtures and lean fuel-air mixtures to the cylinder. Exhaust gases discharged through an exhaust valve provided to the cylinder are delivered to an exhaust gas thermal reactor.

Abstract translation: 一种内燃机，其中单个气缸设置有富燃料 - 空气混合物入口阀，用于从富燃料 - 空气混合物的供应源和用于供应贫燃料的贫燃料 - 空气混合物入口阀提供富燃料 - 空气混合物 来自贫燃燃料混合物供应源的混合物。 丰富的燃料 - 空气混合物入口阀和贫燃料 - 空气混合物入口阀交替打开以交替地向缸提供富燃料 - 空气混合物和贫燃料 - 空气混合物。 通过设置到气缸的排气阀排出的废气被输送到废气热反应器。

公开(公告)号：US3638624A

公开(公告)日：1972-02-01

申请号：US3638624D

申请日：1970-04-13

Applicant: DONALD J O GRADY

Inventor： O'GRADY DONALD J

IPC: F01L13/00 ,  F01L1/08

CPC classification number: F01L13/0036

Abstract: An engine valve operating control mechanism for an internal combustion engine having a transmission output driven gear pump and governor controlling the output of the oil pressure from the pump in direct proportion to the engine load whereby a hydraulic cylinder and piston unit operated by the pump pivots a camshifting lever which shifts the camshaft to move one of three different contoured cam lobe means in contact with the engine valves for opening and closing the intake and exhaust valves at one of three operating conditions for low, medium or high engine speed operation under load conditions.

Abstract translation: 一种用于内燃机的发动机气门操作控制机构，具有变速器输出从动齿轮泵和调速器，其控制来自泵的油压的输出与发动机负载成正比，由此由泵操作的液压缸和活塞单元枢转 凸轮转换杆，其使凸轮轴移动以移动与发动机阀接触的三个不同轮廓的凸轮凸角装置中的一个，用于在负载下的低，中或高发动机转速操作的三个操作条件中的一个下打开和关闭进气门和排气门 条件。

公开(公告)号：US3316890A

公开(公告)日：1967-05-02

申请号：US57852866

申请日：1966-09-12

Applicant: EATON YALE & TOWNE

Inventor： TURKISH MICHAEL C

IPC: F01L1/08 ,  F01L1/16

CPC classification number: F01L1/08 ,  F01L1/16 ,  Y10T74/2101

公开(公告)号：US2411650A

公开(公告)日：1946-11-26

申请号：US48043043

申请日：1943-03-25

Applicant: BURKHARDT OTTO M

Inventor： BURKHARDT OTTO M

IPC: F01L1/08

CPC classification number: F01L1/08

公开(公告)号：US2344993A

公开(公告)日：1944-03-28

申请号：US37901141

申请日：1941-02-15

Applicant: ALF LYSHOLM

Inventor： ALF LYSHOLM

IPC: F01L1/08 ,  F02B41/04

CPC classification number: F01L1/08 ,  F02B41/04 ,  F02B2275/34

公开(公告)号：US11959403B2

公开(公告)日：2024-04-16

申请号：US17342883

申请日：2021-06-09

Applicant: Neil A Murphy

Inventor： Neil A Murphy

IPC: F01L13/00 ,  F01L1/047 ,  F01L1/08

CPC classification number: F01L13/0036 ,  F01L1/047 ,  F01L1/08 ,  F01L13/0063 ,  F01L2013/0052

Abstract: A camshaft assembly for a vehicle valvetrain having first and second engine valves includes a camshaft, and a first camshaft cartridge axially displaceable along the camshaft and including a plurality of first cam lobes configured to selectively impart movement to the first engine valve. A second camshaft cartridge is axially displaceable along the camshaft and includes a plurality of second cam lobes configured to selectively impart movement to the second engine valve. An actuator is configured to axially displace the first camshaft cartridge along the camshaft. A coupling is between the first camshaft cartridge and the second camshaft cartridge. Axial displacement of the first camshaft cartridge selectively imparts movement to the second camshaft cartridge for axial displacement of the second camshaft cartridge.

公开(公告)号：US11635004B2

公开(公告)日：2023-04-25

申请号：US17233271

申请日：2021-04-16

Applicant: Ford Global Technologies, LLC

Inventor： Rani Kiwan ,  Chris Paul Glugla ,  Brad VanDerWege

IPC: F01L1/344 ,  F01L1/08 ,  F01L13/00 ,  F02D13/02 ,  F02D13/06 ,  F02D41/06

Abstract: Methods and systems are provided for providing secondary air to an exhaust system during catalyst warm-up. In one example, a method may include, during a cold start condition, operating an engine with a first number of cylinders unfired and a remaining number of cylinders fired during an engine cycle, opening an intake valve of an unfired cylinder of the first number of cylinders during an expansion stroke of the unfired cylinder, and opening an exhaust valve of the unfired cylinder during a compression stroke of the unfired cylinder. In this way, the unfired cylinders may provide the secondary air to the exhaust system during a stroke that increases mixing of the secondary air with burned exhaust gas from fired cylinders, thus increasing exotherm production in the exhaust system to increase a temperature of the catalyst.