摘要:
The invention relates to an internal combustion engine (1), comprising: an engine block (10) defining at least one cylinder (11) with a head provided with at least one admission opening (12) as well as first and second exhaust openings (13, 14), an admission line (20) comprising a compressor (22) and leading to each admission opening of the engine block, and an exhaust line (30) starting in each exhaust opening of the engine block and comprising a first turbine (32) for driving the compressor and a second turbine (37) for driving an energy recovery system (80). According to the invention, the second turbine communicates exclusively with the second exhaust opening of each cylinder of the engine block.
摘要:
An exhaust gas arrangement includes an exhaust gas system for conveying an exhaust gas stream. The exhaust gas system includes a turbine and an exhaust gas treatment system. The exhaust gas arrangement further includes a working fluid circulation circuit connected to the exhaust gas system for recovery of energy from the exhaust gas stream. The working fluid circulation circuit includes a first heat exchanger which is arranged at a waste heat source for heat exchange between the waste heat source and a working fluid in the working fluid circulation circuit, and a second heat exchanger positioned in the exhaust gas system for heat exchange between the exhaust gas and the working fluid. The second heat exchanger is positioned downstream of the turbine and upstream of a particle filter in the exhaust gas treatment system. An internal combustion engine system and a vehicle including such an exhaust gas arrangement are also disclosed.
摘要:
An internal combustion engine includes a first low-pressure cylinder housing a first low-pressure piston, and a first high-pressure cylinder housing a first high-pressure piston, the first high-pressure cylinder being arranged in upstream fluid communication with the first low-pressure cylinder for providing exhaust gas into the first low-pressure cylinder. The internal combustion engine further includes a second low-pressure cylinder housing a second low-pressure piston, the second low-pressure cylinder being arranged in upstream fluid communication with the first high-pressure cylinder for providing compressed gas into the first high-pressure cylinder, and a second high-pressure cylinder housing a second high-pressure piston, the second high-pressure cylinder being arranged in downstream fluid communication with the first low-pressure cylinder for receiving compressed gas from the first low-pressure cylinder, and further arranged in upstream fluid communication with the second low-pressure cylinder for providing exhaust gas into the second low-pressure cylinder.
摘要:
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.
摘要:
Provided is an engine exhaust gas purification device which reduces or eliminates the electric power required for raising the pressure of exhaust gas recirculation (EGR) gas extracted from the upstream side of an exhaust gas turbocharger to be used for EGR after cleaning processing by an exhaust gas cleaning unit. An engine exhaust gas purification device (1) for reducing and eliminating air pollution substances contained in exhaust gases discharged from a main engine (10) equipped with an exhaust gas turbocharger (20) includes an exhaust gas cleaning unit (70) that cleans a portion of the exhaust gases introduced as an EGR gas from an exhaust line (L1) located at the upstream side of a turbine unit (21) of the exhaust gas turbocharger (20), and a recirculation exhaust gas turbocharger (60) that raises the pressure of the EGR gas which is caused to pass through the exhaust gas cleaning unit (70) by a recirculation compressor unit (62) coaxial with the recirculation turbine unit (61) which is dispose at the upstream side of the exhaust gas cleaning unit (70) and is driven by using the EGR gas.
摘要:
An internal combustion engine (1) and corresponding method, cylinder, closing plate, cylinder and kit of parts, in particular a two-stroke engine, preferably a diesel two stroke engine, which comprises at least one piston (10) arranged in a cylinder (11). Said piston (10) and said cylinder (11) define a variable combustion chamber (101) and a variable second chamber (102). The variable combustion chamber (101) is fluidly connectable to the compressor side of a turbocharger (2,2') via at least one inlet opening (111) and to the turbine side of the turbo charger (2,2') via an exhaust opening (112). The second chamber (102) is fluidly connectable to the compressor side of the turbocharger (2,2') to introduce a compressed air flow into the second chamber (102). The compressed air flow is interruptible such that the second chamber (102) is disconnected from the turbocharger (2, 2') and the second chamber (102) comprises an outlet opening (113) for reducing a pressure of the second chamber (102). The outlet opening (113) preferably comprises a controllable chamber valve.