The compact SUV "Rocky" released by Daihatsu Kogyo on November 1st.The exterior and interior are small, such as changing the emblem, but the contents have been greatly changed.
Power Train is the newly developed hybrid system "e-smart hybrid" and newly developed 1.Equipped with a 2 -liter engine (natural intake), the smart assist, which is a preventive safety function, has been enhanced.The front camera is a stereo, and the parking brake has been changed from a mechanical to an electric type, and a stop retention function has been added to the ACC with all vehicle speed tracking functions.
In addition, an external power supply function that can use an electric product of 1500W or less in total is installed in the hybrid model.
The conventional Rocky (Toyota Motor "Rise") had a fairly low vehicle price.Therefore, it was essential that the vehicle price would not be significantly increased even if a model with a hybrid was made, so the development team aimed at "do their best to get it for less than 2 million yen."
As a result, it has been released at a price that does not include consumption tax at about 1.92 million yen (X HEV grade).In addition, the detailed information of the new Rocky is introduced in related articles (E-Smart Hybrid, which is also developed in light vehicles that appear in Daihatsu and hybrid "Rocky", and price starts at 2,1116,000 yen).
技術説明会には開発の主要人物が出席。右からパワートレーン企画室 主査の坪井宏充氏、製品企画部 エクゼクティブエンジニアの仲保俊弘氏、パワートレーン企画室 主査の堀川英和氏（英はくさかんむりに間があるもの）、製品企画室の勢村勇希氏会場にはeスマートハイブリッドの構成が分かるようボディをカットしてあるロッキーと、新しいロッキーに搭載されている直列3気筒DOHC 1.2リッター＋eスマートハイブリッド、直列3気筒DOHC 1.2リッターエンジンが展示されていた"E -Mart Hybrid" and newly developed 1 of the Rocky/Rise.There was an exhibition of a 2 -liter engine (natural intake).Here are some technical features from developers.
eスマートハイブリッドの構成eスマートハイブリッドのカットモデルNew development 1.2リッターエンジン。ガソリンエンジン車に搭載されるWA-VE型。最高出力64kW（87PS）/6000rpm、最大トルク113Nm（11.5kgfm）/4500rpmNew development 1.2-liter engine is hybrid (WA-VEX), 1.Both 2-liter gasoline (WA-VE) are basically the same, but the efficient points are different between running with the engine and for power generation.Therefore, in this lineup, changes have been made to optimize the characteristics according to each application.
The point that can be distinguished by the exterior is around Intake Mani Hold.The shape was changed to run the maximum torque generated points for driving, for hybrid power generation, with optimal rotation.
Specifically, the gasoline model is the length of the intake mani -hold aimed at enhancing the torque around 2000 rpm, and the slow body body to the cylinder head is long.On the other hand, the hybrid engine is short and the angle of the intake manly hold is very different.This is not suitable for high rotation, but as a result of aiming for a torque that is suitable for power generation, it has become this shape.According to the developer, the conventional 1.0 Natural intake compared to 0 liter turbo engine.The low -speed torque of the 2 -liter engine has not lost.
こちらがカソリンモデルのWA-VE。インテークマニホールドとインテークポートが長く取られているこちらがハイブリッドモデルのWA-VEX。ハイブリッドに適したエンジン特性としていて、ポートが短くインテークマニホールドが小さいThe engine itself is also included in the engine itself.The WA-VE engine has been made for fuel-efficient and smaller, while the power performance is sufficient, but it has been changed in various ways for driving and power generation.
For example, the length of the intake port of the cylinder head that connects the intake manly hold mentioned above is also a long gasoline model, and the hybrid model is short.The reason is that, as I wrote in the intake mani -hold, what you want is different.
The intake port, the gasoline model WA-VE engine, takes the port length to the intake valve, and the handling is straightforward.It is called the "high tumble straight port", but it is not just straight.If you look closely, there is a slight convex on the bottom of the port in front of the valve.
This is a jumping platform for inhaled air.The air flowing through the port flows into the combustion chamber when the intake valve opens, but since the intake valve is round, the air enters the combustion chamber from the lower part of the valve (below the port) when opened.However, the air that enters from it is not a suitable flow for creating an ideal vertical vortex in the combustion chamber, so lift the air flow in front of the valve so that the ideal vertical vortex can be created in the combustion chamber.ing.
インテークバルブ手前で気流を上向きにするためのわずかな凸が設けられている。理想的なタンブル流を作るための工夫だThe fuel injection method of the WA-VE engine was not a direct injection but a conventional port injection, but the mechanism was quite elaborate.
The conventional port injection was trying to fly fuel toward the valve with the pressure of the injection, but this was not enough to focus on fuel, and it would be hard to burn fuel.Therefore, the WA-VE engine made two injectors per port.The aim is to shorten the time in which the injector is open in addition to the injector promotion.The reason is to efficiently send a mixture in a short time where the intake valve is open.
At the same time, set the incident angle for the port and the amount protruding in the port in detail.As a result of these hard construction, the fuel injected from the injector is beautifully mixed into the airflow of inhaled air without adhering to the port wall.And volatile in the combustion chamber.Since gasoline at this time also cools the combustion chamber, it also has the effect of improving the notch resistance.Finally, the combustion efficiency is improved.
In addition, since the mixture is easily burned, the ignition system is no longer necessary to be a multi-spark, so the WA-VE engine uses a single spark ignition method.The same is true even when ERG flows in.
1つのポートに対してインジェクターは2本付く。噴射時間短縮と霧化促進が狙い。また、インジェクターの取り付け位置は何度もシミュレートして狙いどおりの燃焼効率が得られる位置にしているThe exhaust is characterized by enhancing the umbrella diameter of the exhaust valve compared to the same level of engine.
However, even if the exhaust valve diameter is increased only, the effect will be reduced by half if the flow after the exhaust port is bad, so with the WA-VE engine, the engine cooling the engine in the exhaust manifold alternative to exhaust manifold.The structure was to reduce the rise in exhaust temperature by flowing water.When the temperature drops, the pressure of the expansion also decreases, so the flow velocity rises and the flow is improved.
Conversely, in order to promote the warming of the catalyst due to exhaust heat when starting a cooling sensation, the area of the port surface from the head to the catalytic body is reduced and the temperature rises quickly than the conventional engine.Say.
従来のエンジンと比較するとインテークバルブに対してエキゾーストバルブのバルブ径を大ききしている。これは掃気効果を高めて耐ノック性を上げることが狙い排気ポートも内部で3分割。3気筒の120度爆発サイクルと合わせて排圧が上がりにくい構成。排気ポートを水冷とすることで排気の余計な膨張を抑えて流速を上げることも行なっているThere is also a new initiative for the engine cooling water.The water jacket provided around the cylinder is shallow than before.What this means is that the combustion heads are actively cooled to keep the heads in an efficient state, but the lower waist does not require so much cooling and wants to increase the temperature than the head.It was the hope of the production side.Therefore, the cooling effect was given to each of them suitable.
In addition, the water jacket was shallowed to reduce the amount of water in cooling water.If the amount of water that tips inside the engine is small, the water temperature rises quickly, which means that the combustion efficiency immediately after starting and the shortening of the start of purification of the catalyst.
Even if the amount of cooling water is reduced, there is no need to worry about the water flow settings and the radiator size settings.
ウォータージャケットは浅めの作り。ヘッドの冷却はしっかり行ない、腰下は適度な冷却となる。この考えは以前からエンジン開発の現場で言われていたことだという。また、冷却水量を減らせると水温が適正温度になるのも早いこれがウォーターポンプ。ベルト駆動だこちらは発電用のWA-VEX。ハイブリッドシステムの一部なので、クランクの駆動力ではなく、電動ウォーターポンプを採用しているThere are still characteristics around the water.When you follow the water flow of the cooling water, the cooling water sent from the water pump goes up to the head through the cylinder block, but the WA-VE engine first first flows the cooling water around the intake by first flowing the temperature around the intake.Focusing on. "Then, after the intake flows, the water flow is united into one thick waterway and flows along the exhaust side.The exhaust side needed a "heat capacity" that could take heat rather than lowering the absolute temperature.
At the end of the water, the WA-VE engine is a two-system cooling system with a thermostat, apart from the conventional sorting of waterways.The new thermostat used here closes in the cold and works around the second and third cylinders without turning cooling water.This is to promote the rise in water temperature when starting, and when the water temperature rises to the right temperature, the thermo opens and all cylinders are cooled.
ダイハツでは初めてとなる水路の取り回しを採用。インテークは気筒ごとにキチンと冷やし、エキゾースト側は水流を束ねて熱を奪う能力を優先させる作りオイルポンプも小型化してフリクションロスを低減。ポンプが小型になったことから通路を通る際の圧損を低減するため、ポンプとフィルターの位置を限界まで近づけているエンジンオイルの容量も減らしている。これもエミッション対策で油温が早く上がるようにするためだThe upcoming Rocky/Rise has been focused on E-smart hybrids and smart assists with substantial functions, but I think we can tell you that the WA-VE engine has a sufficient topic.If you have the opportunity to take a test drive for a new Rocky/Rise, not only E Smart Hybrid but also 1.2 I would like you to ride a gasoline engine car and experience the "WA-VE engine running".