Internal combustion engine system and a method for an internal combustion engine system
AssigneeVolvo Truck Corporation
InventorsLennart Andersson, Arne Andersson, Bengt Johansson, Nhut Lam, Staffan Lundgren
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Abstract
The invention provides an internal combustion engine system (1) comprising—at least one combustor (3), and—a first expander (4) arranged to receive exhaust gases from at least one of the at least one combustor (3), and to expand and extract energy from the exhaust gases —characterized in that the system comprises a second expander (5) arranged to receive exhaust gases from the first expander (4), and to expand and extract energy from the exhaust gases.
Claims16
A method for an internal combustion engine system comprising
- at least one combustor,
- 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 comprises a crankshaft, and the combustor comprises a piston arranged to reciprocate in a cylinder, and to drive the crankshaft,
- wherein the first expander is a piston expander arranged to drive the crankshaft with the extracted energy,
- comprising providing an exhaust treatment device arranged to receive exhaust gases from the first expander, to process the received exhaust gases,
- the method comprising determining the temperature in the exhaust treatment device, and adjusting the swallowing capacity of the first expander to control the temperature of the process in the exhaust treatment device.
A method for an internal combustion engine system comprising
- a combustor arranged to combust air and fuel,
- an expander arranged to receive, expand and extract energy from exhaust gases from the combustor, and to expel the exhaust gases from the expander by means of an expander exhaust valve, and
- wherein the system comprises a crankshaft, and the combustor comprises a piston arranged to reciprocate in a cylinder, and to drive the crankshaft,
- wherein the expander is a piston expander arranged to drive the crankshaft with the extracted energy, and
- providing an exhaust treatment device arranged to receive the expelled exhaust gases from the expander and to process the exhaust gases,
- the method comprising determining the temperature in the exhaust treatment device, and controlling the expander exhaust valve to control the temperature of the process in the exhaust treatment device.
Dependencies are inferred from the claim text.