Its being quite some time since we posted anything on the Bosch technology bible and now, its time to update the same. Bosch have been the pioneer of technology all across the world and in the Indian subcontinent, they have been striving to bring together things in a nutshell. Of course, some of the technologies invented by them are definitely in the league of becoming the industry firsts. Here is an overview of some of the technologies and their terminologies which are explained out here.
Firing Order :
In a multi cylinder engine, the firing order or its sequence in the combustion stroke is called as Firing Order.
Skyactiv- G :
Mazda, which is yet to come to the Indian market has got Skyactiv-G as their key engine thing. Mazda calls all its engines Skyactiv. In a petrol vehicle, the Skyactiv-G has got the highest compression ratio of 14 and this is by far the best that a petrol engine across the world has been able to achieve. The fuel efficiency in the meanwhile isn’t affected and this in the end results in better torque for the mid and lower range.
Bosch Fuel Delivery Module :
A fuel delivery module has the job to supply fuel to the diesel and petrol injection systems and these components, in modern day vehicles, are directly integrated into the fuel tank of the vehicle. There is an electric pump that based on the ECU’s calculations, transfer the right amount of fuel from the tank to the engine of the car. Then there is the fuel pressure regulator valve as also the fuel filter. There is a fuel reservoir which is also called as the surge chamber for the integrated pump. This comes into picture when the car is being cornered. Moreover, there is also a fuel gauge which checks how much fuel is there in the tank. The modular design from Bosch takes up very little space and hence almost all the vehicles from different segments can be fitted with this technology. Suiting various other cars, this technology can be used with different pressure regulators, pumps and fuel gauges. According to the needs of individual automakers, these components can be calibrated as well. The CO2 emissions are vastly reduced due to these highly efficient delivery pumps. Also for the Indian conditions, these modules have been tuned to be not affected by low quality fuel and also the extreme conditions that they are subjected to. These fuel modules can also be used with corrosive fuels like ethanol blends and also upto 15 percent of the methanol admixtures.
McPherson strut :
In 1949, the first McPherson strut was introduced to the world. A shock absorber mounted on a coil spring is what makes the McPherson strut. This arrangement is very compact and is used in almost all the passenger cars available in India and across the world. The introduction of monocoque construction of chassis of a car enabled the widespread use of this technology. Moreover, it is cheap as well to use and most of the manufacturers prefer this arrangement.
This is a model of a car in which the back seats have got a retractable hood like a cabriolet’s for the top and the front seats are either open with only a framework or have a hard top or hood.
Torotrak Flybrid :
We have often heard of hybrid systems using batteries but the Torotrak Flybrid is the only hybrid system in the world which abhors the use of batteries. It uses a flywheel to store energy. This flywheel rotates at almost twice the speed of sound and rotates at Mach 2. Moreover, the power gains are also immense with this system boasting of an additional 80 Bhp of power. Also, Jaguar have used this technology in their XF prototype.
Boxer engine :
This is a typically used in Porsche cars. It is a flat cylinder engine and is also called as an opposed one. It’s an example of an internal combustion engine which has got the cylinders opposing each other and all the pistons linked by a single central crankshaft reciprocating in the same plane. The other characteristic of a Boxer engine is that it is multi cylindered and always has to have an even number of cylinders. If suppose the engine has got 8 cylinders, then 4 would be in parallel while the other 4 would be opposing it.
Scuderi Split Cycle Engine :
The job of a single cylinder is split into two by this Scuderi Split Cycle Engine. For the 4 stroke engines, the compression and suction are completed in the smaller compression cylinder. The exhaust and power strokes are completed in the large power cylinder. Upto 25 percent increase in the power and mileage can be experienced with this split Cycle thing. Moreover, torque is also amplified in this setup. Lower emissions and also more thermal efficiency are part of the package.
Head Up Display :
Most of the vital information of a vehicle pertaining to the driver is projected on the windscreen, just like a jet. Driver distraction is reduced to a very great extent by this. The engine rpm as also the corresponding speed are displayed on the screen in front of the driver. This was first introduced by GM way back in 1988 on the Cutlass Supreme Pacecar. It was only in 2003 that BMW followed suit wherein they went one up by also providing night vision capabilities as also a navigation system. As of now, in India, there are a very few cars which are available with the Head Up Display feature.
These are some of the terms which have been explained now and we promise to be back with more interesting terminologies later on. More to follow in the coming iterations of the Bosch technology bible.