1. The engine valve drive mechanism adopts a hydraulically supported ball rocker structure. Compared with the hydraulic tappet valve drive mechanism commonly used in general gasoline engines, this novel valve drive mechanism has the advantage of relatively small friction torque, so The required driving force is also small, which can effectively reduce engine power consumption and fuel consumption.
2. In order to effectively reduce the weight of the entire vehicle, the 1.4-liter gasoline engine uses aluminum alloy cylinders, which has achieved a very obvious lightweight effect.
3. The use of special materials and specially processed plastic air intake pipes instead of traditional metal air intake pipes not only achieves a lightweight effect, but also effectively reduces the wall resistance of the air intake pipe, improves air intake efficiency, and increases engine power.
4. The expanded connecting rod processed by advanced technology is used to expand the processed connecting rod large-end hole with special expansion equipment, instead of the original sawing and grinding process. In this way, the zigzag "Huff" surface of the breaker connecting rod can be used to ensure absolutely accurate fastening and positioning, thereby reducing friction and prolonging the service life of the connecting rod.
5. The use of hot-sleeve camshaft, compared with the original camshaft, can not only reduce the weight of the camshaft, but also achieve higher cam profile accuracy and more accurate valve timing.
6. The throttle adopts an electronic control device, also known as E-GAS electronic throttle. This control device can coordinate and reasonably manage the instantaneous requirements of the engine torque and output power of the various operating conditions of the car, such as the driver accelerating, overtaking, and starting the air conditioner. It can make the engine's operating state at each operating point always be in the optimal range, which can not only meet the requirements of low emission and low fuel consumption, but also optimize the driving performance of the whole vehicle.
7. Improving the layout of the engine's intake system can effectively reduce the temperature of the intake air charged into the engine and increase the intake density, so that the engine can output more power on the basis of improved charging efficiency. The specific improvement is to arrange the engine's air intake pipe on the left side of the engine front module above the cooling water tank.
8. In order to improve the anti-corrosion ability of the cooling water tank and prolong the service life of the water tank, the cooling water tank radiating fins arranged in the front module of the engine are all covered with plastic.
9. In order to prevent the bottom of the engine oil pan from colliding and rubbing against uneven roads and damaging the engine, a metal protective plate can be installed under the oil pan.
10. In order to effectively heat insulation, sound insulation and shock isolation, so that it will not be introduced into the passenger compartment and affect the riding comfort, a heat insulation shielding plate is installed in the exhaust pipe of the POLO car.