Mazda RX-7 specific parameters?

Although Mazda is only a small factory compared with Nissan Honda and other big factories, it also has its own unique secret, that is, the rotor engine. Rotary internal combustion engine, but usually referred to as rotary engine for short. Rotor engine is actually a four-stroke internal combustion engine, which was invented by German engineer felix wankel in 1959, so it is also called Wankel engine. Different from the traditional reciprocating piston engine, the running parts of the rotary engine (called the rotor, whose cross section is similar to a triangle) run coaxially with the output shaft, and no lever and cam structure are used to rotate the output force, thus reducing the energy consumption during operation. The patent right of the rotary engine invented by Wankel was originally owned by the German NSU car factory (NSU is one of the predecessors of today's Audi car factory). Although GM in the United States and Toyota in Japan were interested in this design at first, after short-term experiments, it was found that mass production was more difficult than expected, and Mazda in Japan became it. After signing the contract to obtain the patent right of rotary engine, Mazda has successively launched a number of rotary engine power vehicles from 1970 s, including a mass-produced rotary engine vehicle-RX-7. {subsection symbol} Mazda RX-7 is equipped with a twin-rotor engine code-named 13B-REW, with a displacement of 1300c.c With the help of two turbochargers built by Hitachi, more than 255 horsepower can be generated. 1992 When it was published in Japan, the engine power was 255 HP. Although it is not the highest output in its class, under the suspension configuration of four-wheel double A-arms, excellent handling is far more noticeable than performance. Although the chassis of the first version of RX-7 is too sharp and difficult to control at high speed, the factory continues to improve and launch various versions one after another. 1998, after careful adjustment of the engine, the horsepower finally reached the upper limit of the legal value. It also laid the important position of this pure sports car. The original engine code is 13B-Rew, with double rotors and double turbocharging. Another turbine can have more than 400 horses. Also, due to the abundant low-speed torque and rear drive, driving this car at first will be somewhat uncontrollable, which is also the most attractive place of the RX-7. As an upgraded product of RX-7, RX-8 has entered China in an all-round way, and the price is only 380,000 yuan. It is a sports car with high cost performance. It completely inherited Mazda's DNA. As the company's flagship model, RX-8 shows unique dynamic performance, which directly brings you a real sports car feeling. Specifically, this means keen and accurate response, excellent controllability and extended performance limits. The basic concept of RX-8 is a brand-new 4-door 4-seat real sports car, which expresses the sports car value and driving pleasure. Specifically, this car presented to fans has the unique characteristics of a sports car, meets the needs of users for self-expression, and its sports car performance can ensure unprecedented driving pleasure. RX-8 is also very adaptable and practical. It can carry four adults, and in terms of cost performance and practicality, it actually far exceeds the same type of sports car. In other words, MazdaRX-8 not only provides originality and driving pleasure that only a real sports car can have, but also is a sports car that can be enjoyed by a family or four adults. Mazda named its rotating engine RENESIS. The water-cooled dual-rotor engine installed on RX-8 has a displacement of 0.654 liters per chamber. This series of engines can provide two power output stages. One is the maximum power of 7000r/min 14 1kW, and the maximum torque of 5000r/min is 220Nm. Its acceleration time from 0 to 100 km/h is only 7.2 seconds, and its top speed can reach 223 km/h. Although this has made the traditional engine feel ashamed, the high-performance version of RX-8 is even worse. At 8200r/min, it has a power output of 170kW, while the maximum torque of 2 1 1Nm appears at 5500r/min, and the acceleration time from 0 to 100 km/h is 6. The engine provided by Mazda engineers is called RENESIS, which means "the origin of RE (rotary engine)". RENESIS engine is the embodiment of a brand-new vehicle concept, and RX-8 is naturally equipped with a brand-new rotary engine. RENESIS shows an unusually high power output, which exceeds the equivalent reciprocating engine in acceleration, reserve power sense and rapid response. RENESIS adopts side air inlet and exhaust port, which increases the intake area by about 30% compared with the previous generation Mazda rotary engine and greatly reduces the intake resistance. The continuous dynamic intake system and electronic valve control system of the engine make the natural intake unit output unprecedented power. At the same time, in terms of fuel efficiency and emissions, it has also been significantly improved compared with the previous rotary engine. Compared with RX-7, the fuel efficiency is improved by 20%.