| 摘要 |
Arrangement of coolant lines (8, 9), serving for injection-valve cooling, on water-cooled internal-combustion engines for heavy-oil operation. To provide a constructionally simple preheating and cooling device for the heavy oil, main supply and main return lines (8, 9), running along the internal-combustion engine, are laid as pipes inside a cooling water space (7) running along the internal-combustion engine (Fig. 1). <IMAGE>
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