At a time when trams are not yet fully popularized, many people think that plug-in hybrid models are just some transitional products. Because the pure electric mileage of some plug-in hybrid models in the early stage is too low, as long as it can reach the "green card" standard, while other plug-and-mix exist in the embarrassing situation of "one dragon with electricity, one worm without electricity". On the domestic model side, Wei brand's lemon DHT hybrid has a good strength, of which the DHT-PHEV plug-in hybrid is their main hybrid series, and in this series, mocha DHT-PHEV is the brand's largest body size, with four-wheel drive and two-wheel drive model choice, and the brand's other Macchiato PHEV-DHT only has a two-wheel drive model, so in the brand plug-in hybrid model, mocha DHT-PHEV is the most representative.
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Get a quick overview of how the MOCHA DHT-PHEV works
As a plug-and-mix model, the Mocha DHT-PHEV series has a 39.67kWh high-energy density battery pack that supports 60kW fast charging. In addition, it has a long endurance version (two-wheel drive) and a high-performance version (four-wheel drive), of which the long-endurance version of the official calibration of pure electric cruising range of 204km (the official measured value is higher than this calibration), 100 km of power loss fuel consumption of 5.55L/100km, support 3.3kW discharge power. The pure electric mileage of the 2021 ideal ONE is 188km. In addition, the high-performance version (four-wheel drive) pure electric cruising range is 175km, but its 100 km acceleration time can go to 4.8s.
The working principle of Mocha DHT-PHEV is the same as that of other Wei brand hybrid SUVs, which is composed of a hybrid special engine + a two-speed transmission + two motors + a clutch + a motor controller + power battery.
Of the two motors, one is a GM motor that is mainly used for power generation and the other is a TM motor that is mainly used for driving. In addition, although the Mocha DHT-PHEV is equipped with a 1.5T engine, it can eat No. 92 gasoline, and it is not picky like well-known hybrid systems such as Honda's i-MMD and Toyota's THS II. (Refer to the ideal ONE's 1.2T engine to be filled with No. 95 gasoline.) ）
However, it should be noted that the lemon DHT hybrid system is all independently developed by Great Wall Motors, including electric motors, engines and control systems have independent intellectual property rights, unlike some independent brands that want to buy other people's hybrid technology. The second point is that the Lemon DHT hybrid system is a set of modular hybrid systems, which can be compatible with HEV unplugged hybrid and PHEV plug-in hybrid, can be compatible with front and rear drive, and can be compatible with the power system equipment requirements from compact cars to medium and large cars.
Therefore, we can see that under this platform, there are currently Machido DHT, Macchiato DHT-PHEV, Latte DHT, Mocha DHT-PHEV and so on.
Like other model models equipped with lemon DHT hybrids, the Mocha DHT-PHEV has two branches: pure electric and hybrid mode. Among them, static, low-speed driving and urban endurance are driven by pure electricity; the series mode is mainly the engine + generator to provide power, the TM motor is driven by electric power alone, and the engine speed is adjusted to the most economic range, this mode is mainly combined with urban cruise and pure electric mode.
The parallel mode is that three power units output power at the same time, and the power output of the whole vehicle is also the strongest at this time, mainly in the rapid acceleration of urban areas and high-speed sections. In addition, the lemon hybrid DHT platform is also equipped with a rare two-speed transmission of hybrid models, mainly acting on the engine direct drive, of which the engine power direct drive mode (1 gear) will appear at a speed of about 80km/h cruise, mainly to shorten the power transmission path, the engine speed ratio gearset direct drive or hybrid drive, to obtain maximum torque, improve the overall power acceleration performance; TM motor is ready to intervene at any time, dynamically adjust the engine optimal economic working area.
Finally to the high-speed cruise, that is, the worst speed range of efficiency and texture performance of other hybrid models, mocha DHT-PHEV engine direct drive mode (2 gears) can switch the engine to the economic speed ratio of the gear set direct drive, although the speed is increased, but the engine speed is still in the economic zone, to ensure fuel efficiency; at the same time, it can also avoid the problem of excessive engine speed and loud noise.
Therefore, the manufacturer claims that the comprehensive cruising range of Mocha DHT-PHEV oil + electricity is 1195km, and the pure electric endurance is 204km. Reference to the 2021 ideal ONE's oil + electricity comprehensive cruising range is 1080km, pure electric endurance is 188km. Numerically, the Mocha DHT-PHEV will be more durable, of course, after getting two test drives, you can make a comparison.
Finally, for some friends with poor charging conditions, Mocha DHT-PHEV also has a built-in power reserve, the user can preset the power reserve value (30%-80%) through the car machine, and the battery power is lower than the preset value, and the system will directly convert from ev mode to hybrid mode. If you want to pursue a longer-lasting electric drive mode, the Mocha DHT-PHEV has three energy recovery levels and a single-pedal mode, of which the single-pedal mode, if skilled, can also reduce the frequency of right-foot braking.
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Driving texture is infinitely close to the tram
The powertrain of the MOCHA DHT-PHEV long-endurance version is made up of a 1.5T gasoline direct injection engine (thermal efficiency of 38%, with a compression ratio of 11.8:1, using Miller cycle to reduce part-load pump air loss and improve overall combustion efficiency; secondly, the engine is also equipped with a 980° high temperature resistant electronically controlled variable section turbocharger and 350Bar high-pressure direct injection, and the cylinder head integrates exhaust manifold technology. +130kW front drive motor (integrated in DHT transmission).
The official claim that the long-endurance version has a battery life range of 204km, which means that the opportunity for this SUV with an internal combustion engine to use electricity has become longer. In fact, the driving texture of the whole car is the same as that of the tram, and the power response is direct and rapid. Although the long-endurance version does not officially give the 100 km acceleration time score, the feeling of driving daily does not have the feeling of pulling a big car, and driving is very light.
If the energy diagram is adjusted on the right side of the dashboard, it can be found that its series timing is concentrated at a speed of about 40-60km/h. Because the efficiency transfer in series at lower loads is more advantageous than parallel connection, the speed decoupling can be achieved, and the engine works in the optimal efficiency zone. When the deep throttle is accelerated, the energy diagram will work in parallel, allowing the three components to work together.
To the speed of 80km / h or more of high-speed cruising, DHT two-speed transmission can make the engine earlier direct drive mode, because sometimes the hybrid is not only electricity is fuel-saving, but also in the high efficiency range to let the engine directly participate in the efficiency is the highest, to put it bluntly is the gasoline engine and the power motor hybrid, using their respective physical advantages to fill the gap for each other. In addition, the book value of the 1.5T engine of the Mocha DHT-PHEV is quite OK, so driving at high speed, the engine has no obvious roar, and the power performance is also very stable.
Speaking of engine noise, we have to mention that the MOKA DHT-PHEV has made great efforts to create a high-level driving texture. A large number of sound insulation materials are used in the car, the windows are made of double-layer sound insulation glass, and the motor output is used as an aid, so that the whole car can be suppressed at a low level whether it is road noise or wind noise during the driving process. In addition, this set of hybrids is also in place for the movement of the engine intervention, basically you can only know through the dashboard.
The high-performance version adds a 135kW rear-drive motor on the basis of the long-endurance version, and the official claims that the acceleration time of this power system can go to 4.8s, and the fuel consumption of 100 kilometers is 6.3L (WLTC standard). In addition, because it is a four-wheel drive model, the choice of driving mode is richer than that of the high-performance version, and the wheel size and style are the most obvious appearance indicators that distinguish the two versions.
Due to the increase in the rear-drive motor, in the case of sufficient power to adjust to the four-wheel drive mode, the overall acceleration will be more powerful than the long endurance version, and the violent acceleration will bring obvious push back feeling. Although its acceleration time has not been measured, it will not be too different from the official calibration time of 4.8s. At the same time, the stability and field driving ability of the four-wheel drive model in the cornering will also be better than the long-endurance version.
When driving every day, the suspension of the vehicle is basically isolated from the vibration of the road surface, so everyone will not feel any sense of road. However, the four-wheel drive version has an electronically controlled active suspension, which can be adjusted in both sporty and comfortable modes. During daily driving, the system adjusts the damping force of the shock absorber in real time according to the road condition information and the running state of the vehicle, so that the comfort and handling performance are balanced. When individuals try to adjust to sport mode, they can feel that the chassis will become tighter and the lateral tilt will be relatively small.
The mocha DHT-PHEV has a turning charging electronic smell, and the steering wheel has a light damping sensation when driving at low speeds, and the directivity is not accurate, but the body reacts very sensitively. In addition, it also has light, comfortable and sporty three kinds of steering force, if adjusted to the sport mode, the steering wheel will have a more obvious sinking, suitable for some pursuit of control of friends.
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It is still very smart without battery life anxiety
Speaking of intelligent configuration, at present, a number of new car-making forces are doing more carefully, and traditional car companies, especially joint venture car companies such as Japan, Europe and the United States, are lagging behind a lot in the intelligent configuration. The MOCHA DHT-PHEV has a good hardware equipment in intelligent configuration, and has NOH high-speed intelligent pilot assistance and intelligent parking functions.
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Static review of mocha DHT-PHEV design highlights
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Summary of the full text
The product layout of the mocha DHT-PHEV long-endurance version and the high-performance version can meet the needs of friends with different needs, but it is expected that the amount of travel will be a long-lasting version. If it compares the ideal ONE, the performance of high-speed driving texture and high-speed energy efficiency will be better than the latter, and the overall noise level of its own hybrid operation is better than some Japanese hybrid SUV of the same size and price, I believe that after the Mocha DHT-PHEV is based, it will be the potential consumer of most plug-in hybrid SUVs.