The company's black technology series came again. The last time we talked to everyone about Honda's black technology. However, Honda was too "black" and asked Bobby to give me an introduction. Some readers have reported that when it comes to Honda, it did not even mention VTEC. Don't worry, this set will give you a shout. ----------Return F1---------- In 1983, Honda participated in F1 for the second time. This time, Honda relied on its unique turbocharging technology to dominate F1 in the 1980s and made European powers talk about "T" changes. Honda brought a turbocharged engine with a 1.5L V6 layout and broke 600 horsepower, but this was only the prelude to Honda's turbofan F1. 1.5-liter turbocharged, 1050 hp In 1987, Honda released the RA167E, which is the ultimate development of small-displacement turbocharged engines. In fact, as early as the 85 season Honda's horsepower advantage has already emerged. By the year 87, the gap has not only narrowed, but has even opened up even further. 80°V6 twin-turbo, displacement 1494cc, bore 79mm, stroke 50.8mm, compression ratio 7.4, boost pressure 4Bar, speed 14000, 1050 horsepower, 660 Nm torque. Turbo fighter The horsepower of 1050 horses stood out in the 8,000 horses of the supercharged engine at that time. Ford Cosworth 3.5L V8 normal pressure engine was only pressed to 600 horsepower, and it had no fight. It is easy to use the Williams team of the Honda engine to defend the 1987 F1 team championship with a huge advantage of 61 points, while the Brazilian Nelson Piquet and his team-mate Nigel Mansell won the champion of the year. runner up. Lotus also used the Honda engine, so it also won a lot. Driver Senna won the third driver of the year. This time it truly established the F1 status of Honda's engine technology. The picture below shows a Williams racing car equipped with a Honda RA167E engine. 4Bar Ultimate booster What actually created this "BT" monster? The main reason is due to its ultra-short cylinder stroke, although this design will result in low torque, but don't forget that this is a racing engine, and the engine speed during the intense game is basically kept very high The horizontal, short stroke makes the engine react more quickly and can climb up quickly, and don't forget that this is a turbocharged engine. At low speeds, turbo forced intake can offset its low torque problem. Speaking of this turbine, Honda's turbine is not an ordinary turbine. The maximum boost pressure reaches 4 Bar. The boost pressure at 4 Bar is a concept of a horse: Normal pressure is 1 Bar, so a non-supercharged engine can suck up to 1 Bar. The air, and the magic thing of the turbine, uses the exhaust gas of the exhaust pipe to drive the turbofan to rotate, thereby forcing more air to inhale, adding a bigger Kia to the cylinder. Now the turbocharged mainstream civilian car is generally not more than 0.5 Bar, and Honda did 4Bar boost in 87 years. The 4Bar boost pressure represents four times more air intake than the normal pressure engine. It is not difficult to explain why the RA167E can reach 1050 horsepower with only 1.5 liters of ultra-small displacement engine. The key to victory is manufacturing technology Of course, the engineers of other teams are not stupid. They also think of such an engine design. However, it is difficult to achieve the strength and assembly accuracy of cylinders, pistons, and connecting rods. So what really makes Honda dominate is the manufacturing technology that has been developed under the most demanding races – piston mass with an error of less than 50mg, a connecting rod that can withstand 1275 times the gravitational acceleration, and a crankshaft that has undergone high-speed balancing. , Full magnesium aluminum alloy cylinder plus ultra-precision machining assembly technology. Of course, Honda's special high-speed high-speed cams are specially designed for high-speed engines to ensure sufficient cylinder air intake. In the case of a racing car that is swiftly moving around 67,000 revolutions, it is possible to ignore the low-speed bad effects and focus on the high-speed and high-power aspects. Later joining the low-speed cam became Honda's signature technology, VTEC. The FIA ​​changed the game: "I'm afraid of Honda." In 1988, even if the FIA ​​limited the boost pressure to 2.5 Bar, it would not be helpful. The RA168E with the RA167E Yu Wei design still has 700 horsepower. McLaren became the biggest winner of the tournament, with 15 wins in 16 races. Only Ferrari's Borger took a chance to “stolen†a victory. The 199’s annual team points were also unprecedented. There is no way for the FIA ​​to ignore the status quo of Honda’s dominance. This makes it impossible for other manufacturers to play. Victory Balance completely dumped the team using the Honda engine. Therefore, in 1989, the FIA ​​was very much in order to balance the team’s strength. Helplessly completely blocked the supercharged engine. ----------Civil Technologies---------- VTEC After talking about Toyota's unbelievable power in the game, let's talk about Honda's VTEC technology that makes performance go haywire. VTEC is the abbreviation of Variable Valve Timing and Valve Lift Electronic Control System. It is Honda's variable valve timing and variable lift technology. It is the world's first valve that can simultaneously control valve opening and closing time and lift. Valve control system. So why control the valve opening time and valve opening angle? In daily driving, the engine will encounter a variety of operating conditions, such as high-speed cruising, low-speed stop-and-go, and rapid acceleration. If you do not change the valve opening and closing time and lift, it is difficult to meet the dynamics under various conditions. The needs of the. By changing the opening and closing time of the valve, the intake and exhaust phases can be controlled, and the intake rate can be increased by changing the valve lift. Four-cylinder four-cylinder The most addictive of VTEC is when the high camshaft starts to work. When the engine is at a low load, a low-angle cam is used to ensure the fuel economy of the engine. When the engine is under high-load conditions, a high-angle cam is used, which allows more fresh air to enter the combustion chamber, causing the engine to burst. A stronger motivation. On April 19th, 1989, the two new Honda cars named Integra RSI (DA6) and Integra XSI (DA6/DA8) were released at the same time. They were equipped with a 1.6L naturally aspirated engine codenamed B16A. This is Honda. The earliest use of VTEC's engine marks the arrival of the civil performance car NA. Later, the modified B16A can output 170 hp at 7,800 rpm and reach a maximum torque of 157 ng·m at 7,300 rpm. It is necessary to know that the off-oil speed of a commercial vehicle is less than 99% and it is less than 7500 rpm. After a simple modification, the speed is too light and it is not easy to break the 250 horsepower. Million turn! This is the number of engines that other carmakers couldn't reach. But Honda helped you with it more than 20 years ago. High camshaft intervention, VTEC fully open Volkswagen's VVT, valve variable lift technology, is achieved by changing the position of the camshaft. There are two sets of cams on the camshaft. When switching from a low cam to a high cam, the entire camshaft needs to be moved. Need to control the camshaft movement time with very high precision and achieve high cost; BMW's ValveTronic technology is to add a variable angle lever between the camshaft and the valve, use the motor to change the angle of the lever, you can achieve The continuous variable valve lift, the structure is complex, and the cost is very high. Honda VTEC, long before Volkswagen and BMW, has long given a simpler and more effective method. Like Volkswagen, the Honda VTEC engine also has two sets of cams on the camshaft. Unlike the VW camshaft, the VTEC's subtlety is that when the low-angle cam switches the high-angle cam, it only moves the valve on the rocker arm. The detent, the low cam valve rocker arm and the height wheel rocker arm are locked together through the bayonet to achieve the operation of the high cam. In the figure, the working principle of VTEC is explained very intuitively. The key to the switching of high and low cams is the movement of the pin. So VTEC is not a continuous change, when the tachometer pointer crosses 6800rpm, the bayonet locks, the high camshaft gets involved, and VTEC turns on. At this point, the inhalation angle and flow rate are even greater. The Earth seems to start rotating at an accelerating speed. The surrounding scene suddenly flies backwards as if it were a flight. The air intake is so loud that you can't hear the radio, and it's so fast that you can't see the tachometer too soon. These changes are not gradual, but an instant. The horsepower is like a doubling growth. The entire car is like a mad rush after being kicked. In the 90's of Honda's high-speed natural inspiration is the only one! Figure Honda VTEC red head F20C dismantling, you can see the camshaft on both sets of high and low cam When it comes to here, Honda's black technology is almost the same. Xiao Bian is incapable, only to say that Honda's famous black technology debut, or Honda's own technology can be deep excavated, then ten articles may not speak. After the end, Honda's black technology we talked about here, and interested readers can go deep into Honda's technology and welcome you to contribute to the content of Honda Tech. Manufacturers of black technology series We will continue to share with you all those unknown black belly technology, so please everyone look forward to. Excavator Pontoon,60 Excavator Pontoon,Waterway Dual-Use Excavator Pontoon,Amphibious Pontoon Binzhou Jinyi Equipment Co.,Ltd , https://www.jyexcavator.com