● Volkswagen EA888 2.0TSI evo4
▲Application models: Audi Q6, Porsche Macan, Golf R
Cast iron cylinder block
The Volkswagen Group has not failed to try electrification in the field of family cars, having previously launched a three-clutch PHEV plug-in hybrid system based on the MQB transverse platform, and the Passat plug-in is still in use today. But obviously, this system in the eyes of Toyota THS, Honda i-MMD completely does not constitute a threat, now the focus of the new energy VW has been completely on the MEB platform of pure electric vehicles listed, such as the ID series.
In the field of fuel cars, VW does not seem to bother priming new gasoline engine solutions, the forthcoming fourth generation EA888 2.0TFSI evo engine on the SAIC Audi Q6 is actually still a cast iron block, but in terms of data, this whole imported EA888 can be more fierce than the domestic third generation EA888, the book data came to 195kW/400Nm. What's more, this EA888 is tuned to 235kW/420Nm on the European-spec Golf R, which gives more confidence to users who modify the EA888.
On the technical level, the high-powered EA888 evo4 all use the intake/exhaust dual side valve lift, which is obviously a treatment not available in the domestic EA888 evo3, while designs like 350Bar direct injection, Miller cycle, and cylinder head integrated exhaust are all basic operations. Some people will inevitably say that the cast iron block is too bulky, but it's worth it to VW to make a block that meets the high power demand with lower process cost and shorter cycle time. If you use cold cast aluminum block like Mercedes M139, even if it can meet the strength requirement, the high production process will not only pull back the capacity, but also the yield is difficult to guarantee.
Mercedes-Benz M139l 2.0T
▲Application Model: AMG C 43
For AMG, which emphasizes the ultimate performance, cast iron block is obviously unacceptable. The 2.0T inline four-cylinder engine uses an all-aluminum block to achieve the lightweight requirements of the entire vehicle, regardless of whether it is the transverse platform M139 or the longitudinal platform M139l. In terms of data, this engine reaches a ceiling figure of 300kW/500Nm on the AMG C 43, which is straight out of a 3.0T six-cylinder.
The AMG M139 series uses an inverted aluminum block with a cold hard casting process, a forged hot formed crankshaft and forged aluminum pistons to ensure strength while also achieving lightweight requirements.
On the technical level, in addition to the oversized twin-scroll exhaust turbocharger (roller bearing), the new M139 also incorporates advanced technologies such as cylinder mirror coating technology, manifold EFI + direct in-cylinder injection, DVVT + DVVL variable valve control, etc. As for the M139l model on the longitudinal platform, AMG has also experimented with an electric motor-driven turbocharger, powered by a 48V electrical platform, this electric turbo reaches a maximum speed of 175,000 rpm, which effectively reduces the lag problem of the "big turbo", and with the BSG motor (10kW ), ensuring that the M139l has excellent power response even at low rpm. The data shows that the AMG C 43 with 2.0T+8DCT+4MATIC can "break 100" in 4.7s.
Toyota D-4ST 2.4T
The Lexus NX350
For example, the new generation of Lexus NX350 for the Eastern European/Russian market is equipped with the 2.4T L4 engine for the first time. The 2.4T L4 engine, with a maximum power of 205kW and a maximum torque of 430Nm, is more powerful than the 2.0T engine used in most family cars.
From the cylinder block itself, this 2.4T engine's uses a 1.14 stroke/cylinder bore ratio, which is typical of the long stroke design like the A25A engine, plus a high compression ratio of 11:1, water-cooled intercooler, dual VVT-i, variable capacity oil pump, and its fuel economy is not even inferior to the 2.0T engine of the previous generation of the Handa.
As the latest head, many new technologies on the Toyota A25A 2.5L self-priming engine are applied on this 2.4T turbo engine, such as dual injection (manifold EFI + direct in-cylinder injection). At the same time, this engine also redesigned the cylinder head, the direct injection port was moved to the top of the cylinder for the first time, and the four valve clamping angle is also larger than the self-priming series, which is conducive to optimizing the intake roll flow and improving combustion efficiency. Nowadays, this mid-mounted direct injection is already an industry trend, and the way to put the direct injection port on the side is not so mainstream, especially for the dual-injection engine.
● Mazda e-Skyactiv X 3.0L L6
▲Application model: Mazda CX-60
Starting with the CX-60, Mazda began using the front longitudinal chassis architecture for the first time in a family car. On this new platform, all three major components of the CX-60 are refreshed, including the new 2.0L PHEV plug-in hybrid, 3.0L E-SKYACTIV X gasoline engine and 3.3L E-SKYACTIV D diesel engine, as well as the latest longitudinal 8AT transmission, i- Activ 4WD system.
Like the SKYACTIV X 2.0L engine in the Mazda3, the longitudinally arranged 3.0L inline six-cylinder engine features the brand's newly developed SPCCI's Spark Plug Controlled Compression Ignition technology, which enables the engine to directly ignite a thin fuel-gas mixture at a distance from the spark plug through an ultra-high compression ratio of 16.3:1 (Euro version) under low-load, high-rpm cruising conditions. This maximizes combustion efficiency and minimizes waste.
Of course, there are some differences between the 3.0L compression-ignition engine and the 2.0L engine. Thanks to the larger displacement, the engine is able to get enough intake air at low speeds to meet the minimum standards for lean combustion, without the need for an additional mechanical boost module like the 2.0L engine. In addition, including the 3.0L gasoline engine and 3.3L diesel engine, the CX-60 comes standard with a BGS motor 48V light-hybrid system.
● Jeep Hurricane 3.0T L6
▲Application model: Jeep Grand Wagoneer L
The same 3.0L displacement inline six-cylinder engine, as the representative car company of American muscle cars, Jeep obviously this inline six-cylinder engine has a completely different understanding. In the new generation of the Grand Wagoneer L, we saw for the first time Jeep's newly developed Hurricane 3.0T L6 twin-turbo engine, which is mainly used to replace the previous 5.7L V8 self-priming engine, 6.4L V8 self-priming engine.
The new generation of the big Wagner L amazing weight, this 3.0T twin-turbo engine was tuned to a maximum power of 516.80 hp and a maximum torque of 678 Nm, this data than BMW's B58, Land Rover's Ingenious 3.0 twin-charged, Mercedes-Benz M256 engine are more fierce.
As an iteration of the engine, Jeep in this new head also counted enough efforts, the cylinder block using plasma coating injection, reduce piston friction; direct injection system injection pressure has also increased the current first-line level of 350Bar, which is conducive to strengthening the gasoline atomization effect; two turbochargers using low inertia design, to ensure fast throttle response.
