ARRANGEMENT FOR A SUPERCHARGED COMBUSTION ENGINE CONCERNING COOLERS FOR INLET AIR TO AND EXHAUST GASES FROM THE ENGINE
First Claim
1. An arrangement for a supercharged combustion engine (2), which arrangement comprises an inlet line (8) adapted to leading air at above atmospheric pressure to the combustion engine (2), at least one compressor (6a, 6b) adapted to compressing the air in the inlet line (8), a first cooling system with a circulating coolant, a second cooling system with a circulating coolant which during normal operation of the combustion engine is at a lower temperature than the coolant in the first cooling system, and at least one charge air cooler (9a, 9c) applied in the inlet line (8) and adapted to being cooled by coolant from the second cooling system, characterised in that the second cooling system comprises a first radiator element (24) and a second radiator element (36) arranged in series with the first radiator element (24) in the second cooling system so that at least part of the coolant which circulates in the second cooling system undergoes two steps of temperature lowering during a single round of circulation in the second cooling system.
1 Assignment
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Accused Products
Abstract
An arrangement for a supercharged combustion engine (2), including at least one compressor (6a, 6b) for compressing air in a first cooling system, the first cooling system having a first circulating coolant, a second cooling system with a second circulating coolant which during normal operation of the combustion engine is at a lower temperature than the first coolant in the first cooling system, at least one charge air cooler (9a, 9c) applied in the air inlet line (8) and being cooled by coolant from the second cooling system. The second cooling system includes a first radiator element (24) and a second radiator element (36) arranged in series with the first radiator element (24) in the second cooling system, so that at least part of the coolant which circulates in the second cooling system undergoes two steps of temperature lowering during a single round of circulation in the second cooling system.
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Citations
10 Claims
- 1. An arrangement for a supercharged combustion engine (2), which arrangement comprises an inlet line (8) adapted to leading air at above atmospheric pressure to the combustion engine (2), at least one compressor (6a, 6b) adapted to compressing the air in the inlet line (8), a first cooling system with a circulating coolant, a second cooling system with a circulating coolant which during normal operation of the combustion engine is at a lower temperature than the coolant in the first cooling system, and at least one charge air cooler (9a, 9c) applied in the inlet line (8) and adapted to being cooled by coolant from the second cooling system, characterised in that the second cooling system comprises a first radiator element (24) and a second radiator element (36) arranged in series with the first radiator element (24) in the second cooling system so that at least part of the coolant which circulates in the second cooling system undergoes two steps of temperature lowering during a single round of circulation in the second cooling system.
Specification