Mitsubishi domestic 4K2 series engine Domestic brand Fuxing
[Quanzhou Yisheng Machinery Co., Ltd. 2017 Shanghai Auto Show] Remember Mitsubishi? Although Mitsubishi's cars have declined, Mitsubishi is still active in the core of domestic brands. The familiar 4G63\4G64 and other 4G6 series engines are still installed in major second- and third-tier domestic brands. After dozens of years, they are a little overwhelming. Now Aerospace Mitsubishi has launched the latest series of 4K2 engines, injecting new impetus into domestic brands.
● What is the performance of the 4K2 series engine?
4K2 series engines cover displacements of 1.8L-2.4L, including 1.8T (4K20D4T), 2.0T (4K21D4T), 2.4T (4K22D4T), 2.0L (4K21D4M), 2.1L ( There are six engines in total, 4K21D4N) and 2.4L (4K22D4M).
The strongest power is 2.4T, the maximum power is 160kW/5600rpm, and the maximum torque is 320N·m/2000-4400rpm. The 2.0T power can also reach the maximum power of 150kW/5600rpm and the maximum torque of 280N·m/2000-4800rpm. The 1.8T engine has a maximum power of 128kW/5500rpm and a maximum torque of 250N·m/2000-4800rpm. The overall power level is considerable, enough to make the second and third domestic brands a powerful selling point.
The overall bore of the 4K2 series engine is 87 mm, and the stroke varies according to different displacements. The 2.4T stroke is 100 mm. The compression ratio of the turbocharged engine is 9.6, which is not much different from the joint venture turbocharged engine. At the same time, the engine can be equipped with a balance shaft to optimize the engine's NVH.
4K2 series engine is a new type of engine independently developed by Shenyang Aerospace Mitsubishi, which can meet the national five emission standards without special treatment. At the same time, the minimum fuel consumption rate of the 2.4T engine is only 244g/kW·h, and the fuel consumption performance is very good.
● What technology does the 4K2 series engine have?
4K2 series engine adopts dual-VVT DOHC valve train to realize the technology of continuous variable independent intake and exhaust valve timing. Compared with the single-sided VVT system, it can be more accurate according to the engine speed and load. control. Effectively improve combustion efficiency and improve fuel economy. However, the timing system uses a belt drive instead of the popular chain drive, so the quietness effect will be better.
At the same time, Mitsubishi's low-inertia exhaust gas turbine is used, and it is equipped with an electronically controlled pressure relief valve to effectively ensure the turbine Service life. The fuel system is used. Manifold injection is used, which greatly reduces the difficulty of calibrating injection pressure and reduces manufacturing costs.
4K2 series engines can be matched with front-wheel drive or rear-wheel drive models, which can meet the needs of most models.
● Summary
4K2 does not use more advanced technologies, such as direct injection in the cylinder, variable displacement oil pump, integrated cylinder head Trachea, etc., can reach a relatively good power level, which is enough to attract many domestic brands without substantial technology research and development. At the same time, the reliability, fuel economy, and cost control of Mitsubishi engines are very good, which is an irresistible temptation for domestic brands. However, because of this, what should domestic brands do in the face of low-cost procurement and expensive but not necessarily successful independent research and development of engines? It seems that Mitsubishi has somewhat hindered the technological development of domestic brands. Again, there is demand and supply, and Mitsubishi is right. If you want Mitsubishi's powerful MIVEC technology, please choose a 4K1 series self-priming engine with a displacement from 1.8-2.4L. (Photo/text/photo: Quanzhou Yisheng Machinery Co., Ltd. Lai Dacong)
