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在以前的两篇文章中讨论了冲程缸径比的变化对发动机外形尺寸、重量指标及动负荷的影响~*.S/D的变化对发动机热损失的影响也是个重要问题. 在τ_1到τ_2的时间内,在气体变温T_q和缸壁平均温度T_w的温差下,燃气向气缸包容空间表面散出的热能量Q_T可由下式决定:
In the previous two articles, the influence of the variation of stroke cylinder diameter on the engine size, weight index and dynamic load is discussed. * The influence of S / D on the engine heat loss is also an important issue. In the range of τ_1 to τ_2 Time, the gas temperature T_q and the average temperature of the cylinder wall temperature T_w, the gas emitted to the cylinder space containing surface thermal energy Q_T can be determined by the following formula: