Type of Booster System: Mechanical Boosting

构造：机械增压器由发起机曲轴经齿轮增速器驱动，或由曲轴齿形传动带轮经齿形传动带及电磁离合器驱动

Construction: The mechanical supercharger is driven by the crankshaft of the engine through the gear accelerator, or by the crankshaft tooth drive pulley through the tooth drive belt and electromagnetic clutch.

特性：机械增压能有效地进步发起机功率，与涡轮增压比拟，其低速增压效果更好。另外，机械增压器与发起机容易匹配，构造也比拟紧凑。可是，由于驱动增压器需消耗发起机功率，因此燃油消耗率比非增压发起机略高。

Characteristic: Mechanical turbocharging can effectively improve the engine power, and its low-speed turbocharging effect is better than turbocharging. In addition, the mechanical supercharger and the initiator are easy to match, and the structure is comparatively compact. However, the fuel consumption rate is slightly higher than that of the non-supercharged initiator because the power of the initiator is needed to drive the turbocharger.

发起机增压体系类型：气波增压

Type of Booster System: Gas Wave Boosting

构造：由曲轴经传动带驱动气波增压器转子，运用排气压力波使空气遭到紧缩，以进步进气压力。

CONSTRUCTION: The crankshaft drives the air wave supercharger rotor through the drive belt. The exhaust pressure wave is used to compress the air to step the air pressure.

特性：气波增压器构造简单，加工便利，作业温度不高，不需求耐热材料，也无需冷却。与涡轮增压比拟，其低速转矩特性好，可是体积大，噪声程度高，装置方位遭到一定的约束。这种增压器还只能在低速范围内运用。由于柴油机高转速比拟低，因此多用于柴油机上。

Characteristic: Gas wave supercharger has simple structure, convenient processing, low operating temperature, no need for heat-resistant materials, and no need for cooling. Compared with turbocharging, its low-speed torque characteristics are good, but its volume is large, the noise level is high, and the azimuth of the device is constrained to a certain extent. The supercharger can only be used in a low speed range. Because the maximum speed of diesel engine is comparatively low, it is mostly used in diesel engine.

发起机增压体系类型：涡轮增压

Turbocharging System Type of Initiator: Turbocharging

构造：运用废气涡轮机，带动与其同轴装置的压气机叶轮作业，新颖空气在压气机内增压后进入气缸

Construction: Using exhaust gas turbine to drive the compressor impeller with its coaxial device to work, new air enters the cylinder after pressurizing in the compressor.

特性：涡轮增压的优点是经济性比机械增压和非增压发起机都好，并可大幅度地降低有害气体的排放和噪声程度。涡轮增压的缺陷是低速时转矩添加不多，并且在发起机工况发作变化时，瞬态照应差，致使轿车加快性，特别是低速加快性较差

Characteristic: The advantage of turbocharging is better economy than mechanical turbocharging and non-turbocharging initiator, and can greatly reduce the emission of harmful gases and noise level. The defect of turbocharging is that the torque is not much added at low speed, and the transient response is poor when the engine working condition changes, which results in poor acceleration of the car, especially at low speed.

发起机增压体系类型：复合增压

Type of Booster Supercharging System: Compound Supercharging

构造：机械增压与涡轮增压恰当分离

Structure: proper separation of mechanical and turbocharging

串联复合增压：在这种增压体系中，空气先经涡轮增压器进步压力后，进人中间冷却器降温，再经机械增压器增压。这种增压方式主要用于高增压发起机上

Series compound turbocharging: In this turbocharger system, air advances pressure through the turbocharger, enters the intermediate cooler to cool down, and then supercharges through the mechanical turbocharger. This type of booster is mainly used in high booster initiator.

并联复合增压：由机械增压器和涡轮增压器一同向发起机供给增压空气。在低转速范围主要靠机械增压，而在高转速范围主要靠涡轮增压。这种增压体系使发起机低速转矩特性得到改善

Parallel compound turbocharger: Supercharged air is supplied to the engine by mechanical turbocharger and turbocharger. In the low speed range, it mainly depends on mechanical turbocharging, while in the high speed range, it mainly depends on turbocharging. This turbocharging system improves the low-speed torque characteristics of the engine.