From teapot to trophy, the history of Renault engine transformation born for racing

　　 [Technical Channel of Quanzhou Yisheng Machinery Co., Ltd.] 2014 F1 racing will usher in a new era. After three years of research, design, production and commissioning, Renault launched a turbocharged engine + electric assist in the 2014 F1 competition power system. The engine is a 1.6L V6 turbocharged, and the electric motor is assisted by the cooperation of the two electric motors. After 25 years, the Renault F1 engine has once again introduced a turbocharged form. Can it continue its former glory?

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●Introduction to the 2014 Renault F1 power system

　　1) Renault F1 engine

　　 is different from the V8 engine of the 2013 F1 racing car. In 2014, the Renault F1 engine will be reduced from the original 2.4L displacement to 1.6L, and the air intake method will be natural. The air intake is changed to single-turbo air intake, and the engine is changed from eight cylinders to six cylinders. As for the cylinder diameter and stroke, the corresponding changes have taken place. The injection mode has been changed from multi-point injection to direct injection, and the limit engine speed has been changed from 18,000 rpm. Reducing it to 15,000 rpm, the motor adds an engine heat recovery motor to the original brake energy recovery motor, and the limit speed of the brake energy recovery motor is increased from the original 38,000 rpm to 50,000 rpm.

　　According to the official introduction, although the displacement of the V6 engine is smaller than that of the V8 engine, due to the introduction of turbocharging technology, its power output is stronger than the latter, and the engine The weight is also lighter, only about 100 kg. Various factors make the fuel consumption of the V6 engine 30% lower than that of the V8. Stronger power and lower fuel consumption are the result of improvements to meet the requirements of the new F1 competition system. Renault officially named this power system 'Energy F1' in order to maintain consistency with the current production model Clio.

2013/2014 Renault F1 special engine parameter comparison engine RS27-2013ENERGY F1-2014 Displacement 2.4L1.6L Limit speed 18,000 rpm15,000 rpm Air intake mode Natural intake turbocharged arrangement 90° V890° V6 Bore diameter maximum 98mm 80mm piston stroke non-standard 53mm exhaust mode dual exhaust pipe single exhaust pipe fuel supply mode non-direct injection direct injection MGU-K speed 38,000 rpm maximum 50,000 rpm MGU-K maximum output power 60kW120kW MGU-H speed-->100,000 rpm Watchmaking: Quanzhou Yisheng Machinery Co., Ltd.

　　2) Renault F1 electric motor

　　 There are two electric motors on the 2014 Renault F1 power system-MGU-H and MGU -K. MGU (Motor Generator Unit) can act as both a motor and a generator. MGU can convert electrical energy into mechanical energy when used as a motor, and convert mechanical energy into electrical energy when used as a generator.

　　H in MGU-H is the abbreviation of Heat (thermal energy). MGU-H is installed when the turbocharger is connected to the turboshaft. When the turbine is working, MGU- H will convert part of the mechanical energy of the turbine rotation into electrical energy. The converted electrical energy can be used directly by the MGU-K motor, or stored in the battery to meet subsequent use requirements. At this time, the MGU-H acts as a generator. In addition, the MGU-H motor can also control the speed of the turbine by converting the stored electrical energy into mechanical energy-reducing the turbine that rotates too fast to prevent overheating, and speeding up the rotation of the turbine to eliminate turbine lag. At this time, the MGU-H acts as a motor.

　　 K in MGU-K is the abbreviation of Kinetic (motion). MGU-K is installed on the side of the engine and connected to the crankshaft, which can also realize the mutual conversion of electrical and mechanical energy. When the vehicle is decelerating, the MGU-K acts as a generator to convert the mechanical energy of the rotating crankshaft into electrical energy. At the same time, because the engine speeds down quickly under drag conditions, it shares a part of the pressure of the brake system, which makes the brake pads heat faster. . When the vehicle is in starting and accelerating conditions, the MGU-K acts as an electric motor, allowing the engine to start faster and accelerate more powerfully.

　　 Compared with the MGU-K motor on the 2013 Renault F1 power system, the output power of the new version of the MGU-K motor is twice that of the old version (120kW vs. 60kW) . On the whole, the combination of MGU-K and MGU-H can effectively improve the fuel efficiency of the engine, eliminate turbo lag and quickly transmit power.

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