has seen a detailed comparison of Toyota Landa and Nissan Qashqai from the outside to the inside. So what are the engines of these two cars? What's the difference with a CVT gearbox? Today we will take it apart and show it to everyone!
engine
Fenglanda is equipped with a 2.0L self-priming four-cylinder engine, the model is the classic M20 series, with a maximum power of 126 kilowatts and a maximum torque of only 205 Nm.
Nissan Qashqai is equipped with a 1.3T turbocharged four-cylinder engine, model HR13, with a maximum power of 116 kilowatts and a maximum torque of 270 Nm. This engine was actually jointly developed by Nissan Renault and Mercedes-Benz, so it can be seen in Mercedes-Benz A-Class, B-Class, Nissan and Renault cars.
This M20 engine has an aluminum alloy cylinder block from top to bottom. It uses Toyota's D-4 hybrid injection technology, which is compatible with both manifold injection and in-cylinder direct injection. The thermal efficiency of the entire engine is as high as 40%.
This M20 engine uses laser side skirt pistons, which improves oil retention and scratch resistance. In addition, the cylinder is made of diamond-like carbon electroplating material, which is coated through physical vapor deposition technology to achieve the effects of high hardness, high elasticity, high inertness and low friction.
Qashqai’s engine is also an all-aluminum alloy cylinder block from top to bottom. What is different is that this engine uses a triangular cylinder head to bring the exhaust closer to the center of the engine. The compact design reduces the weight of the engine by about 3 kilograms. In addition, Nissan's new generation Nanoslide cylinder bore coating technology is used inside the cylinder. Coating materials such as iron or carbon are instantly melted through high-voltage arcs and sprayed evenly onto the lightweight aluminum alloy cylinder inner wall. The mechanical friction loss of the cylinder is lower than that of traditional The gray cast iron cylinder liner is 50% lighter and has very high wear resistance.
In addition, this Qashqai engine also uses an electronically controlled wastegate valve, which can change the opening pressure of the bypass valve. The later the opening time of the solenoid valve, the greater the boost pressure, and the higher the engine's power and torque. This is how the high and low power adjustments of many engines are actually done. On the engine external characteristic curve, the speed at which the torque curve begins to decrease is the timing for the bypass valve to open.
Looking at the exhaust part, Fenglanda uses an ordinary exhaust manifold. Qashqai has the latest integrated exhaust manifold. When the car is cold, the high temperature of the exhaust manifold can quickly heat the coolant. When the engine is under high load, the coolant can also cool down the exhaust. When the exhaust temperature decreases, the pollutant content in the exhaust gas will be significantly reduced, helping the engine to meet more stringent environmental regulations. At the same time, since the integrated exhaust is almost integrated with the cylinder block, it can further reduce the weight of the engine by about 3 kilograms.
Fenglanda's particle trap is far away from the engine, and the temperature is relatively low, which is not conducive to burning off particles and can easily cause the particle trap to become clogged. The Qashqai's particle trap is close to the exhaust end of the engine, and can use the high temperature of the exhaust to restore the particle trap, making it less likely to clog.
CVT gearbox
Both Landa and Qashqai are equipped with CVT gearboxes, but after taking them apart, they were found to be different.
Fenglanda uses a steel belt structure, which is the case for most CVT gearboxes at present. The supplier of this steel belt is Bosch. It consists of countless wedge-shaped steel sheets connected in series through two flexible steel belts. The biggest advantage of steel belt transmission is that it is low cost and can also reduce the size of the gearbox. However, the disadvantage is that the maximum torque of the power output is not very large, "slip" may occur during rapid acceleration, and the instantaneous power transmission efficiency becomes low. Moreover, it is sensitive to both high and low temperatures, and the probability of steel strip breakage is relatively high.
Although Qashqai also has a CVT gearbox, it is no longer the previous Nissan CVT. The steel belt drive has been replaced by a steel chain drive from Germany's Schaeffler. Steel chains are numerous pieces of perforated steel connected in a chain manner, and their strength and durability are much stronger than steel belts.The friction with the cone wheel will be greater, it can withstand a large torque of 450 Nm, the power loss during rapid acceleration is small, and it is not easy to "slip". However, the cost of steel chains is high and the volume is relatively large. However, it is more "resistant to manufacturing", so it often appears in some power-conscious cars, such as Audi A4 and Subaru XV. They all use Schaeffler steel chain transmission CVT transmission. box.
Fenglanda's CVT gearbox uses Toyota's "Direct Shift-CVT" technology, which means adding a first gear in front of the CVT transmission wheel. When starting, the gear can be driven directly to avoid "slippage" of the starting steel belt and loss of power. This is also Toyota's remedy for the weaknesses of its CVT gearbox.
Because Fenglanda's CVT is driven by a steel belt, it cannot output large torque, so it is only equipped with a mechanical oil pump to spray and lubricate the inside of the gearbox. The Qashqai uses steel chain transmission, which requires better heat dissipation during the transmission process, so it uses an electronic high-pressure oil pump to provide higher oil pressure.
Summary
Who to buy? It is clear at a glance
Through the dismantling of Toyota Landa and Nissan Qashqai, Toyota is still the same Toyota, and it is still the Toyota that pursues "enough is enough". On the other hand, Nissan Qashqai is striving for change, "leaving Asia and entering Europe", using a higher-level Loulan platform, using a large amount of aluminum alloy to reduce weight, using a new 1.3T turbocharged four-cylinder engine, and using a steel chain CVT gearbox. . To be honest, I really didn’t expect that Nissan could make such a change!
So, how to choose between these two compact Japanese joint venture SUVs with similar prices? If you just want to buy something cheap and for home use, and don’t have much pursuit of driving or power, then Fenglanda will do. And if you want a young and fashionable appearance, high configuration, and a certain pursuit of power and driving control. Then Qashqai is obviously better value for money! (The measurement data conclusions and opinions in this article and video are only responsible for this vehicle, and the measurement data are responsible for the published experimental methods.)
2023 Toyota Landa overall score
2023 Nissan Qashqai overall score
