[ Auto House Original Test Drive] This is a special test drive experience activity. Said it especially because it was invited by Honda to come to Japan’s Motegi Circuit to learn about the new technological achievements it has painstakingly researched in recent years; and what’s more special is that before that, the factory kept the secret work of this event without leaking until The day before the event, we still don't know what cars we will test drive and what technologies will be showcased.
Various doubts were finally revealed at the scene. At first, I was a little disappointed because the vehicle in front of me was actually an old face to the Chinese people. However, after understanding them one by one, I am sure that they are not the Fit, Accord, and Sperui I am familiar with, because Honda has implanted different new powers into them, so that each product is a bit less ( Not even) oily smell.
● Experience model: Fit hybrid version
The Fit hybrid version has been launched overseas, and the car will also meet the Chinese at this year's Guangzhou Auto Show. It is understood that this car will be imported into China next year. Let us take a look at its power in advance.
New car highlights: equipped with IMA hybrid power system
Like Honda Insight or CR-Z, the Fit in front of you is also equipped with an IMA hybrid system. The system is mainly composed of a 1.3L i-VTEC naturally aspirated engine, a thin DC brushless motor, a CVT stepless transmission, a power control unit (PCU), and a nickel-metal hydride battery pack.
Honda’s hybrid system uses a parallel design, in which the engine is responsible for the main power output, and the electric motor is used as auxiliary power to drive the front wheels. When the two powers are combined, the integrated output power of the IMA system in the Fit hybrid model is 98 horsepower, and the peak torque can reach about 167 Nm. In terms of data, it is close to some 1.8L naturally aspirated models.
Working principle of IMA hybrid power system:
Starting acceleration: The motor assists the engine to drive.
Driving at low speed: the engine cylinder is closed and driven only by the electric motor.
Vehicle acceleration: The motor is turned off and only the engine is driven.
High-speed driving: The engine is driven and assisted by an electric motor.
Vehicle deceleration: The four cylinders of the engine will stop running, and the motor can convert the excess energy during deceleration into electrical energy and store it in the battery (brake energy recovery).
Idling stop: The engine stops automatically.
The appearance of the Fit hybrid model has many changes compared with its normal model. As for the interior, if you don’t pay attention to the “ECON” green button on the center console and the instrument marked with IMA, it will be difficult to mix it. The identity of the move is clearly seen. However, it should be noted that since this test drive is a right-hand drive model, it will take some time to adapt in terms of driving route and driving vision.
Test drive experience:
After everything is ready, start the vehicle. At this time, because the engine is not running, the interior of the vehicle is very quiet. Attach the D gear and lightly step on the accelerator pedal. Under the combined action of the engine and the motor, the vehicle has a good explosive power. The gasoline engine installed in the car runs smoothly and works closely with the CVT gearbox to make the vehicle accelerate very linearly.
Of course, if you have a bad temper, you can choose to increase the throttle to speed up the vehicle. At this time, you can clearly feel the engine running, and at the same time, the electric motor is at rest. As the vehicle speed continues to rise, the electric motor will be awakened again, and the engine and the electric motor will output power together to maintain the vehicle at high speed.
If fuel economy is the priority, you need to press the “ECON” button on the center console to enter the energy-saving driving mode. However, under the service of the Eco Assist system, the vehicle's throttle response will be somewhat lagging at this time, and the acceleration will not be smooth. According to the staff in the car, in the energy-saving mode, the power of the air conditioner will also be reduced. Unfortunately, because it was in early winter at this time, I did not experience the drop in air conditioning efficiency.
Although the official Fit hybrid version has a comprehensive fuel consumption of only about 3.3 liters per 100 kilometers, it will be further verified after our evaluation in the future, but with the addition of electric motors and batteries, the Fit hybrid version is more fuel-efficient than its normal version. There is nothing wrong with it. Moreover, the addition of these two objects made the car heavier, but the actual driving did not obviously feel too much load, which gave the editor a deep impression. It is understood that the Fit hybrid version will be imported from Guangzhou Honda for domestic sales in 2012. Under the condition that the national new energy subsidy is not lucrative, its final price will undoubtedly determine the car's sales.
● Experience model: Fit EV
Compared with the Fit hybrid version, the Fit EV is a zero-emission vehicle. Unlike the version that was just unveiled in China, this time the test drive is the final mass-produced model. Although this car may not come to China earlier than the Fit hybrid model, let us have a simple understanding of it first.New car highlights: pure electric drive
As a pure electric vehicle, the Fit EV is composed of a gearbox coaxial motor, a low-friction gearbox and a lithium-ion battery pack placed at the bottom of the car.
The maximum power of the electric motor is 92 kilowatts (approximately 128 horsepower), and the torque output can reach 256 Nm. The official said that the maximum speed can reach 144km/h. In terms of batteries, this car uses a 20-kilowatt-hour lithium-ion battery pack provided by Toshiba. It can be fully charged in 6.5 hours with a 200V power supply and can last 210KM after being fully charged. In the fast charging mode, 80% of the battery can be injected into the battery in 20 minutes.
The Honda FIT EV concept car has been unveiled at the Guangzhou Auto Show, and the mass-produced version appeared at the event this time. In terms of appearance, the car uses a bright blue paint, which is very suitable for its pure electric characteristics.
As for the interior, the car adopts a light tone as a whole, which makes it very clean and warm. The interior layout of the car is not much different from the normal version of the Fit. The addition of a large-size display screen, heated seats, and ESP system is sufficient to show that the configuration of this car is not low.
Test drive experience:
Pressing the start button started my short pure electric journey. To be honest, the normal version of the Fit is already very quiet when idling, and this electric car can be described as silent. Stepping on the “switch” pedal, there is no familiar sound from the engine running, only a faint electric current is transmitted to the ear. However, the start of the Fit EV is not weak. When you step on the pedal lightly, the vehicle can quickly make forward feedback. The early acceleration has a clear push back, which fully demonstrates the low-torque and strong characteristics of the electric vehicle.
“Smooth, no frustration” is not an exaggeration to describe the acceleration process of the Fit EV. As the “switch pedal” continues to deepen, switching the vehicle to the “sport” mode seems to be a good choice. After entering the sport mode, the vehicle exerts more power, the speed increases linearly, and the maximum torque of 256 Nm can be released without stopping. In addition, when the vehicle is in the sport mode, the dashboard is displayed in red, which is enough to give the driver the urge to continue to test the bottom line of the vehicle speed. However, the test drive route this time will pass through multiple forks. Therefore, objective conditions do not allow the test drive to be accelerating all the time. When the foot leaves the accelerator pedal, at this time, the vehicle's braking energy recovery system starts to work, with a significant braking effect, and the generated energy will be recycled into the battery, waiting to be reused.
In addition, in terms of handling, because the rear suspension of the Fit electric car uses a multi-link structure, while maintaining a certain degree of comfort, there is no lack of driving pleasure, but if you want to expect it to be tougher when cornering, then Obviously it is a demanding one. However, the car feels obviously better than the normal version of the Fit when turning, and the steering is light, but it has feedback strength, and the overall driving feeling is more comfortable. In addition, because the bulky battery pack is placed under the car, this also makes the car more stable when traveling.
Unfortunately, due to the objective factors of the route and the short time, I can't experience the performance of this car at high speed, and can only use the official maximum speed of 144km/h as the limit. But in terms of acceleration, I personally feel that the car's initial acceleration is by no means inferior to the 2.0L displacement naturally aspirated model.
It is reported that the Fit electric car will enter the Japanese and American markets next year, and the factory also admitted that the car will also conduct road tests in the Guangzhou area. However, in view of the current domestic new energy policy is not clear, the editor believes that the Fit EV may still be some distance away from the Chinese.
● Experience vehicle: Accord PLUG-IN HYBRID (demonstration test vehicle)
In addition to the two Fit new energy models, Honda also brought the dual-motor hybrid system to the event site, and the system was carried by an Accord. However, the official said that the test drive was only a demonstration test car. , The focus is to show how the dual-motor hybrid system works.
New car highlights: equipped with dual-motor hybrid power system
This Accord demonstration test vehicle is equipped with a Honda dual-motor hybrid power system. Among them, the 120-kilowatt dual-motor is responsible for driving the vehicle and generating electricity and power regeneration; for the gasoline engine, the system uses an in-line four-cylinder 2.0L Atkinson cycle i-VTCE engine. This engine uses an electronic water pump to eliminate the auxiliary drive belt, thereby reducing friction. In addition, electronic VTC (Continuously Variable Valve Timing Control) can achieve the best control of engine operation.
What is the Atkinson cycle engine:
The Atkinson engine uses only one flywheel with a crank connecting rod mechanism to achieve 4 strokes. The feature is that it can delay the closing of the intake valve and discharge part of the gas from the intake valve during the compression stroke to reduce the intake volume. The current Atkinson cycle engine uses electronic control devices and intake valve timing devices to expand the volume of the oil/gas mixture burned in the cylinders, thereby allowing the power unit to use fuel more efficiently.
The engine and motor in this dual-motor hybrid power system are designed in parallel and controlled by a clutch connection. When the clutch is disconnected, the electric motor provides power for the vehicle (the engine is only responsible for generating electricity), and when the clutch is engaged, the engine directly links the wheels. The dual-motor hybrid power system has an “EV (Electric) mode” that can drive on city streets; and a “Hybrid (hybrid) mode” that relies on the electrical energy of the engine to drive the motor; and when cruising at high speeds, the engine can be directly connected Driven by tires.
It is understood that in the electric mode, the maximum speed of the car can reach 100km/h, but the cruising range is only within 25 kilometers. However, in the hybrid mode, the maximum cruising range of this car can be increased to about 800 kilometers. In terms of charging, in addition to charging with the brakes of the vehicle, the household 220V power supply can fully charge the lithium-ion battery in the car within 1.5 hours (the full charge time of the 110V power supply is within 2.5 hours). However, it is worth noting that although the manufacturer has not announced the capacity of its battery pack, it is speculated from the fact that the battery can be fully charged in only 1.5 hours from the household power supply, and the battery capacity will not be too large. And whether the final result is consistent with our inference, we still need to wait for the official answer.
Since the Accord PLUG-IN HYBRID test car is powered by an electric motor when starting and driving at low speeds, the interior of the car is very quiet. Unlike the single-motor IMA hybrid power system, with the assistance of 120kw dual-motors, the car has a relatively good power output in the early acceleration. But when you want to speed up quickly, you still need to step on the accelerator. At this time, the engine will quickly intervene in the work, and the roar of the fuel engine will suddenly erupt, and the speed will increase significantly. However, because the car uses an electric CVT gearbox, the blunt power output will be resolved by the CVT, making the vehicle speed very linear and smooth, without any obvious frustration.
Due to space constraints, during the test drive, the vehicle never reached the high-speed cruising state, and the editor could not experience the performance of the engine alone. Therefore, you can only choose to enter the energy-saving mode to test the reflection of the vehicle. After pressing the ECON button, the throttle response quickly becomes slow, and the power output can be described as mild. Of course, priority is given to energy saving. This result is also expected. In addition, when the car is closing the accelerator or braking, the car enters the braking energy recovery mode. The function and driving experience are not much different from the previously tested Fit hybrid version, so I will not describe it too much here.
Although the final test data is not available for support, after a simple test drive, the editor believes that the Accord PLUG-IN HYBRID test car with a dual-motor hybrid system has more sufficient power output when starting and driving at low speeds. At the same time, theoretically, compared with ordinary fuel vehicles and general hybrid vehicles (using single motors), the combination of dual motors and fuel engines is also more fuel-efficient.
●Experience model: Accord electric four-wheel drive vehicle (demonstration test vehicle)
If you know Acura’s friends, you will not be unfamiliar with its SH-AWD technology. But it seems that Honda is not satisfied with this, and then developed an electric SH-AWD system. Now, let’s take a look at how it will perform in the Accord.
New car highlights: equipped with electric SH-AWD system
Compared with the SH-AWD system currently used in Acura models, although only the word “electric” is added, the internal structure is significantly different. In fact, we can divide the electric SH-AWD system into two and look at it. First of all, the front wheel is in charge of a newly developed 3.5L V6 engine developed by Honda (maximum power is about 310 horsepower, peak torque can reach 360 Nm) The combination with a 7-speed dual-clutch transmission with a built-in 30kW motor (this layout has been implemented in the current Civic hybrid model), which is not much different from the general hybrid front-wheel drive; while the rear wheel uses about 20kW Double motors are independently driven.
Compared with the previous SH-AWD, the electric SH-AWD system eliminates the front and rear wheel drive shafts, and the electric rear axle directly replaces the cumbersome devices such as electromagnetically controlled multi-disc clutches. This has the advantage of further reducing the weight and space of the vehicle. Leave it to the battery pack. To put it simply, in fact, the electric SH-AWD system is in the front-drive hybrid vehicle, where two motors are added to the rear axle to drive the rear wheels separately.
Test drive experience:
In actual driving, the 3.5L V6 engine with direct injection function in the electric SH-AWD system is matched with a 30KW electric motor to drive a model like Accord. But this time, the manufacturer hopes to let us experience the performance of the electric SH-AWD system in terms of control.
When winding a pile, the rear wheel of the vehicle is directly controlled by two motors, so the torque increase or decrease is switched between the left rear and the right rear wheel more actively. In sharp turns, the rear wheel torque can be transmitted by the inner wheel For outer wheels, but due to the soft suspension adjustment of the vehicle, it always feels that the body is tilted obviously when doing actions.
Compared with the traditional mechanical structure of the four-wheel drive system, the electric SH-AWD system has a simpler structure and a lighter weight. Because it is directly controlled by the motor, it can more directly transfer the torque to the tires and reduce the power speed. The loss is just the stability of the electronic device, and the performance of the four-wheel drive system in terms of getting out of trouble remains to be tested.
●Experience model: Honda Sibolui (demonstration test car)
The last experience is Honda's new power combination-“new 2.4L engine + CVT gearbox”. Responsible for carrying them is the Honda Spiro, which we are still very familiar with. Can this kind of power matching inspire the sports gene of SPIRIT?
New car highlights: equipped with a new 2.4L engine + CVT gearbox
This time, the highlight of the Honda Sprite for the test drive is that it is equipped with a brand-new 2.4L engine and matched with a CVT gearbox. Among them, this 2.4L engine adopts VTC (Continuously Variable Valve Timing Control) and direct injection technology on the basis of DOHC (Dual Overhead Camshaft), VTEC (Variable Valve Timing and Lift Electronic Control System) technology, So as to promote the full combustion of fuel and increase the power output of the engine. It is understood that the output power (135kw) and fuel economy of this new Honda engine have been increased by 5%, and the maximum torque (240 Nm) has increased by 10%.
In addition, the CVT gearbox that matches the engine achieves a wide gear ratio while being lightweight and compact, thereby improving transmission efficiency. According to the official, the fuel economy is 5% higher than the previous CVT gearbox and about 10% higher than the 5AT gearbox of the same level.
Test drive experience:
After being held in a limited venue for a long time, the organizer finally took us into the track to experience the demonstration test car . Entering the car, after everything is ready, under the full throttle, the car immediately rushed away after thinking for a moment. When accelerating in a straight line, this car’s new engine can provide ample power. Although the power performance is not as fast as that of the 1.8T turbocharged model, the torque has increased to 240 Nm. I believe it will have a 100-meter acceleration performance. Made progress.
The CVT gearbox matched with the engine is continuous and linear during the shifting process, which is also the characteristic of the continuously variable transmission, which will not let you feel the shock of shifting gears. However, driving a vehicle on the track, the brain is not free to care about these, because, relatively speaking, the CVT transmission is obviously more suitable for use in the city.
Although the focus of this experience is on the upgrade of vehicle power matching, the weakness of the experimental Sperui in terms of handling is revealed in the ruthless track. When cornering at high speeds, the generally comfortable and tuned suspension system of Japanese cars does not provide enough support for the vehicle, and the tires do not have enough grip, rubbing against the ground, and there are protest-like roars from time to time. , Continue to corner with full confidence, this front-wheel drive car will have a slight understeer situation. Fortunately, with the intervention of the electronic stability program, the short-term loss of control of the vehicle can be resolved.
When I got out of the car, the idea of whether Sperui was suitable for the track was circling in my mind. If it is to test the power upgrade of the new power combination of the car, and the fuel-saving effect, then it may be more straightforward to choose other methods.
Summary: In my opinion, the main purpose of Honda’s holding of this event is actually to promote some of the new technologies developed in recent years, and the purpose of these new powers is to perform as better as possible while improving efficiency. Fuel economy. Although some of the technologies experienced this time are still in the stage of demonstration and experimentation, it is not difficult to see from this that Honda is working hard to achieve it. (Photo/Car Home Qi Tianxiang)