公开(公告)号：US20210003082A1

公开(公告)日：2021-01-07

申请号：US16976974

申请日：2018-03-16

Applicant: VOLVO TRUCK CORPORATION

Inventor： David CARLSON ,  Staffan LUNDGREN

IPC: F02D35/02 ,  F02D13/02 ,  F02D41/00

Abstract: The invention relates to a method (100) for estimating a cylinder pressure (CP) in an internal combustion engine arrangement (10), the method comprising the steps of: initiating (110) an opening of a valve by an actuator during an expansion stroke; monitoring (120) the valve to determine a point in time (Tp) when the valve opens; determining (130) a differential pressure (DP) between the combustion cylinder and a position in a fluid medium exhaust passage (29, 39, 60) downstream said valve at the point in time (Tp); receiving (140) data being indicative of a pressure (EP) in the fluid medium passage at the point in time (Tp); and determining (150) the cylinder pressure (CP) at the point in time (Tp) based on the determined differential pressure (DP) and the data indicative of the pressure in said fluid medium passage.

公开(公告)号：US20200217244A1

公开(公告)日：2020-07-09

申请号：US16638575

申请日：2017-09-04

Applicant: VOLVO TRUCK CORPORATION

Inventor： Arne ANDERSSON ,  Staffan LUNDGREN

IPC: F02B41/06 ,  F02B33/22

Abstract: The present invention relates to an internal combustion engine arrangement for a vehicle, said internal combustion engine arrangement comprising a combustion cylinder housing a reciprocating combustion piston, and an expansion cylinder housing a reciprocating expansion piston, said expansion cylinder being arranged in downstream fluid communication with the combustion cylinder for receiving combustion gases exhausted from the combustion cylinder, wherein the internal combustion engine arrangement further comprises a pressure tank arranged in fluid communication with the expansion cylinder, wherein the internal combustion engine arrangement is further arranged to be operated in a first operating mode in which compressed gas generated in the expansion cylinder is delivered to the pressure tank, and a second operating mode in which compressed gas contained in the pressure tank is delivered from the pressure tank to the expansion cylinder.

公开(公告)号：US20200173329A1

公开(公告)日：2020-06-04

申请号：US16334406

申请日：2016-09-23

Applicant: VOLVO TRUCK CORPORATION

Inventor： Lennart ANDERSSON ,  Arne ANDERSSON ,  Bengt JOHANSSON ,  Staffan LUNDGREN ,  Nhut LAM

IPC: F01N3/20 ,  F02D41/40

Abstract: An internal combustion engine system includes a combustor arranged to repetitively receive air and fuel, combust the received air and fuel, and expand the combusted air and fuel, an expander including a cylinder and a piston arranged to reciprocate in the cylinder, the piston being connected to a crankshaft of the engine system, and an exhaust guide arranged to guide exhaust gases from the combustor to the expander, wherein the system is arranged to provide an injection of fuel into the exhaust guide and/or arranged to provide an injection of fuel into the combustor after a combustion in the combustor and before a reception of air and fuel in the combustor for a subsequent combustion.

公开(公告)号：US20200232397A1

公开(公告)日：2020-07-23

申请号：US16334407

申请日：2016-09-23

Applicant: VOLVO TRUCK CORPORATION

Inventor： Lennart ANDERSSON ,  Arne ANDERSSON ,  Bengt JOHANSSON ,  Staffan LUNDGREN ,  Nhut LAM

IPC: F02D13/02 ,  F02B41/06 ,  F02G3/02 ,  F02D41/14 ,  F02D41/26 ,  F02D41/38

Abstract: A method for controlling an internal combustion engine system, the engine system including a combustor arranged to receive air and fuel, and combust the received air and fuel, an expander arranged to expand exhaust gases from the combustion in the combustor and to extract energy from the expanded exhaust gases, and a communication valve arranged to control a communication between the combustor and the expander, including determining during operation of the engine system whether there is a pressure difference across said communication valve.

公开(公告)号：US20190178152A1

公开(公告)日：2019-06-13

申请号：US16060969

申请日：2016-12-14

Applicant: VOLVO TRUCK CORPORATION

Inventor： Lennart ANDERSSON ,  Arne ANDERSSON ,  Bengt JOHANSSON ,  Nhut LAM ,  Staffan LUNDGREN

IPC: F02B41/06 ,  F01N3/035

CPC classification number: F02B41/06 ,  F01B1/06 ,  F01N3/035 ,  F01N3/103 ,  F01N3/2066 ,  F01N13/009 ,  F01N13/0097 ,  F02B33/06 ,  F02B33/20 ,  F02B33/22 ,  F02B37/004 ,  F02B37/105 ,  F02B37/24 ,  F02B75/222 ,  F02B75/227 ,  F02D41/024 ,  F02D2041/001 ,  F02D2200/0802 ,  F02G5/00 ,  Y02A50/2325 ,  Y02T10/144 ,  Y02T10/24 ,  Y02T10/26

Abstract: An internal combustion engine system includes at least one combustor, and a first expander arranged to receive exhaust gases from at least one of the at least one combustor, and to expand and extract energy from the exhaust gases, wherein the system includes a second expander arranged to receive exhaust gases from the first expander, and to expand and extract energy from the exhaust gases.

公开(公告)号：US20180363535A1

公开(公告)日：2018-12-20

申请号：US16060967

申请日：2015-12-14

Applicant: VOLVO TRUCK CORPORATION

Inventor： Lennart ANDERSSON ,  Arne ANDERSSON ,  Bengt JOHANSSON ,  Nhut LAM ,  Staffan LUNDGREN

IPC: F01N13/00 ,  F01N13/14 ,  F01N3/035 ,  F01N3/20 ,  F02B33/20 ,  F02B33/44 ,  F02B37/10 ,  F02B41/06 ,  F02G1/02 ,  F02G3/02 ,  F02M31/04 ,  F02M31/093 ,  F02M35/10

Abstract: An internal combustion engine system includes at least one combustor, a compressor arranged to compress air, an air guide arranged to guide compressed air from the compressor to at least one of the at least one combustor, an expander arranged to expand exhaust gases from at least one of the at least one combustor and to extract energy from the expanded exhaust gases, and an exhaust guide arranged to guide exhaust gases from at least one of the at least one combustor to the expander, wherein the exhaust guide is at least partly integrated with the air guide.

公开(公告)号：US20170241304A1

公开(公告)日：2017-08-24

申请号：US15314044

申请日：2014-05-28

Applicant: VOLVO TRUCK CORPORATION

Inventor： Arne ANDERSSON ,  Bincheng JIANG ,  Staffan LUNDGREN ,  Håkan SANDSTRÖM

IPC: F01L3/20 ,  F01L1/46

CPC classification number: F01L3/205 ,  F01L1/465 ,  F01L3/10 ,  F01L3/20 ,  F01L5/18 ,  F01L5/20 ,  F01L7/06 ,  F01L9/026 ,  F01L9/04 ,  F01L2820/031 ,  F01L2820/034

Abstract: A valve arrangement for a cylinder of an internal combustion engine arrangement includes a check valve configured to be positioned at an intake side port of the cylinder for controlling gas flow into the cylinder, wherein the valve arrangement further includes an intake valve arrangement positioned upstream from the check valve, and an actuating arrangement configured to controllably position the intake valve arrangement for closing the intake side port.

公开(公告)号：US20160333776A1

公开(公告)日：2016-11-17

申请号：US15106184

申请日：2013-12-19

Applicant: VOLVO TRUCK CORPORATION

Inventor： Arne ANDERSSON ,  Bincheng JIANG ,  Staffan LUNDGREN ,  Staffan JOHANSSON ,  Bengt JOHANSSON

IPC: F02B41/06 ,  F02B75/22 ,  F02B33/22

CPC classification number: F02B41/06 ,  F02B33/22 ,  F02B75/225 ,  F02B2075/025 ,  F02B2075/027

Abstract: An internal combustion engine including a first set of cylinders includes: a first two-stroke compression cylinder housing a first compression piston connected to a first crank shaft; an intermediate two-stroke compression cylinder housing an intermediate compression piston, wherein the second two-stroke compression cylinder is configured to receive compressed gas from the first two-stroke compression cylinder; and a first four-stroke combustion cylinder housing a first combustion piston, wherein the first four-stroke combustion cylinder is configured to receive compressed gas from the intermediate two-stroke compression cylinder; wherein the internal combustion engine further includes a second set of cylinders including: a second two-stroke compression cylinder housing a second compression piston connected to the first crank shaft, wherein the second two-stroke compression cylinder is configured to provide compressed gas to the intermediate two-stroke compression cylinder; and a second four-stroke combustion cylinder housing a second combustion piston, wherein the second four-stroke combustion cylinder is configured to receive compressed gas from the intermediate two-stroke compression cylinder; wherein each one of the intermediate compression piston and the first and second combustion pistons are connected to a second crank shaft, the second crank shaft being configured to rotate with a speed of at least twice the speed of the first crank shaft.

Abstract translation: 包括第一组气缸的内燃机包括：第一二冲程压缩气缸，其容纳连接到第一曲轴的第一压缩活塞; 容纳中间压缩活塞的中间二冲程压缩气缸，其中所述第二二冲程压缩气缸构造成从所述第一二冲程压缩气缸接收压缩气体; 以及容纳第一燃烧活塞的第一四冲程燃烧气缸，其中所述第一四冲程燃烧气缸构造成从所述中间二冲程压缩气缸接收压缩气体; 其中所述内燃机还包括第二组气缸，所述第二组气缸包括：第二二冲程压缩气缸，其容纳连接到所述第一曲轴的第二压缩活塞，其中所述第二二冲程压缩气缸构造成向所述中间体提供压缩气体 二冲程压缩缸; 以及容纳第二燃烧活塞的第二四冲程燃烧气缸，其中所述第二四冲程燃烧气缸构造成从所述中间二冲程压缩气缸接收压缩气体; 其中所述中间压缩活塞和所述第一和第二燃烧活塞中的每一个连接到第二曲柄轴，所述第二曲轴构造成以至少第一曲轴的速度的两倍的速度旋转。