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扩缸和增压是提高现有车用柴油机功率常用的两种方法,目前多采用增压法。车用柴油机增压后,虽然还存在着低速扭矩特性差和加速响应滞后的缺点,但在转速、排量和外形不变的情况下,功率大幅度提高,经济性、排放和噪声得到改善,单位功率质量下降;并可通过增压度的变化,扩大柴油机的产品系。
Expansion of cylinder and booster is to improve the existing vehicle diesel engine power two commonly used methods, the current use of supercharging method. After the turbocharged diesel engine, although there are still shortcomings of low speed torque characteristics and acceleration response lag, but the speed, displacement and shape unchanged, the power increased significantly, economy, emissions and noise are improved, Unit power quality decline; and through the pressure degree changes, expanding the product line of diesel engine.