Text/Civil
Geely's Emgrand L Thor Hi · The X plug-in hybrid model will open for pre-sale on April 26, as the second model under Geely Automobile to adopt "Raytheon Hybrid Technology", once again making "Raytheon Hybrid" a hot topic, the model launched this time is a PHEV model, while the previous Hoshigoku L hybrid version is a HEV model. As the same technical system, the two are not much different at the technical level.
For example, the most important hybrid engine and the hybrid transmission DHT PRO. So as the pillar supporting Thor's hybrid, what is their technical logic, how is the specific performance, and what are the characteristics?
DHE15 (1.5TD Hybrid Engine):
The engine has a maximum thermal efficiency of 43.32%, surpassing the 43.04% of BYD's Snap Cloud engine (1.5L). It reaches a maximum power of 110 kW at 5500 rpm and a peak torque of 225 N·m in the 2500 to 4000 rpm speed range. A high compression ratio of 13:1 is used to achieve a deep Miller cycle.
At the same time, it adopts high-pressure direct injection, supercharged intercooling, deep Miller circulation and low-pressure EGR and other technologies, in addition, it also has 17L electronically controlled variable displacement oil pump, electronic water pump, electronic vacuum pump and other electrification accessories. Compared with the hybrid engines of the same class, the Geely 1.5TD hybrid engine has 66.7% higher liter torque and 35% higher liter power. At the same time, its axial size is 77% of the same power level of conventional engines. The breakthrough in technology is still very large.
Then there's the hybrid-specific transmission DHT Pro:
The basic structure of dhT Pro is a high degree of integration of two motors, transmissions and electrical controllers, using a planetary gear set, but unlike the single-row planetary gear set of the Toyota THS hybrid system, the 3-speed transmission mechanism is laid out through the design of two rows of planetary gear sets.
In terms of specific structure, Geely's DHT Pro is composed of P1 and P2 dual motors, and the engine is connected to the P1 motor for power generation, and the P2 motor is responsible for driving the P2 motor; the clutch is disengaged and engaged between the engine, the P1 motor and the P2 motor, and the clutch is disconnected when pure electric driving, engine idle operation and charging the battery pack.
Operating logic, dhT Pro can also achieve pure electric, series and parallel modes. Pure electric mode is that the P2 motor drives the vehicle alone, and it is driven when starting or accelerating with a small throttle.
In series mode, the engine charges the power battery pack via a P1 motor, which drives the vehicle and regulates the engine load. With pure electric and series mode, the system efficiency is increased by 30% compared to conventional models.
In parallel mode, the engine drives the vehicle directly, and the electric motor assists the force. During braking, 100% kinetic energy recovery can also be achieved.
The most characteristic 3-speed shift is achieved through the following modes:
1. Ejection start mode, DHT Pro matches the 1st gear speed ratio through the clutch to achieve the ejection start and improve the acceleration ability of the start.
2, low-speed parallel mode, at a speed of more than 20km/h per hour, you can let the engine intervene at low speed and quickly enter the parallel mode.
3. High-speed mode, when accelerating at 80-120 km/h, 60% of the reserve power can be released, and the acceleration performance of the high-speed rear section is also excellent.
For reference, the Speed of the Great Wall Lemon Hybrid DHT switching to parallel mode is 35-40km/h, and the Honda i-MMD system requires a speed of 80km/h to enter parallel mode.
As the fuel saving of the foundation of the hybrid system, what is the actual performance of Thor hybrid?
Named after Star Trek L Thor Hi · X oil-electric hybrid version, the official given 100 km fuel consumption of 4.3L, because the model is currently on the market soon, the online owner data is less, as far as the data currently collected, the actual comprehensive fuel consumption of the owner is 5L per 100 kilometers, and the driving habits are different up and down about 0.2L. It is not much different from the current mainstream hybrid models.
summary:
Through a dedicated engine with extremely high thermal efficiency and excellent comprehensive capabilities, as well as a 3-speed DHT based on two planetary gear sets, the Geely Raytheon Hybrid makes the engine intervene efficiently under more working conditions, while meeting the energy saving, efficiency and smoothness. The performance of fuel consumption is also in the current first echelon, which can be seen that the technical strength of Geely's system is also relatively outstanding.