We, at OVERDRIVE, have been on a quest to search out ‘India’s Coolest Automobile’ and have examined over two dozens to find out whose air conditioners are probably the most environment friendly. Clearly, all these vehicles have factory-fitted air conditioners. In truth, now it is uncommon to search out an vehicle bought in India and not using a factory-fitted AC. However this was not at all times the case. A number of a long time again, issues have been totally different, very totally different.
Proper as much as the mid-80s, producers in India didn’t present vehicles with air conditioners. These have been discovered solely on imported vehicles, which have been extraordinarily costly and never too widespread. So what did the blokes who bought Fiats or Ambassadors do. Again then additionally, our nation’s ‘jugaad’ had its personal method of discovering options.
Come summer time and you’d discover the markets flooded with khus-khus tatties, or dried grass mats. Khus-khus is mainly an fragrant perennial Indian grass, whose roots have been woven into mats, hand followers, baskets, and so on. I consider in some inside components of India, poor folks nonetheless use khus-khus tatties to remain cool in summer time. In rural India, regionally made air coolers even have khus-khus mats which are stored moist to allow the cooler to blow out cool air.
Khus-khus tatties have been tied on the roofs of vehicles earlier than setting out on any journey. Picture supply: pazyathu.blogspot.com
Motorists would purchase these khus-khus tatties and tie them on the roofs of their vehicles. Earlier than setting out on any journey, they’d pour water over these grass mats, and consequently the roof of the automotive would calm down and drop temperatures contained in the passenger compartment by about 10°C or extra. The evaporation of the water from the mat would additional cool the metallic floor of the roof because of the scientific phenomenon known as ‘evaporative cooling’. In case you have been out for a protracted drive, you pulled into a petroleum pump each couple of hours and the attendant fortunately poured water over the khus-khus tattie and bought a bit of ‘baksheesh’ or tip.
I bear in mind a visit I made in summer time within the early ’80s to the Melghat Wildlife Sanctuary. Earlier than beginning out I bought not one however two khus-khus tatties from Crawford Market. These I positioned on prime of the roof of my Fiat and used coir rope to lock them. Temperatures in that area of Central India in Might simply contact 45°C. However by maintaining the khus-khus tatties moist, we have been in a position to journey to Melghat in relative consolation. Paradoxically, that yr the monsoons arrived early and on the return journey the identical khus-khus tatties grew to become a trigger for discomfort, as a result of within the incessant rain they made the passenger compartment unbearably chilly.
From what I’ve learn, the khus-khus tattie was used extensively as an indigenous cooling system by the British. Throughout their ‘Raj’ over India, the one factor they feared most was our summers. The sahibs put in khus-khus tatties over all of the openings of their houses just like the home windows and doorways. A ‘bhishtee’ or water provider can be then entrusted the duty of often throwing water from the surface on these khus-khus tatties. This was very efficient in cooling when winds, sizzling or cool, blew. The speedy evaporation of sprinkled water and the refreshing odour of khus-khus made the interior areas each cool and cozy. It’s believed using such tatties was additionally prevalent through the Mughal instances, and the invention of this system is attributed to the Mughal emperor Akbar.
Most vehicles would have an oscillating fan mounted on the within of the B-pillars. Picture supply: www.globalsources.com
One of the well-liked automotive equipment in India within the ’60s, ’70s, ’80s and even ’90s was the oscillating automotive fan. Most vehicles would have one mounted on prime of the dashboard. Authorities-owned autos often had two followers, with one every being fitted on the within of the B-pillars. You may nonetheless see them in a few of the sarkari Ambassadors. I consider these followers have been authorized as commonplace equipment for presidency autos and a finances was created for them. This finances should nonetheless exist, solely it goes unutilised now. Really, given the way in which our authorities capabilities, it might not be shocking if somebody remains to be making use of this finances. Unusually, at the present time when virtually all vehicles come geared up with ACs, you continue to discover automotive followers being bought, even on Amazon!
Within the days when producers didn’t promote air-conditioned vehicles, a small-scale trade emerged to retrofit vehicles with air conditioners. In truth, a number of of those AC retro-fitters are nonetheless round. The one distinction being they now primarily do repairing and servicing of automotive air conditioners.
Individuals would match an AC evaporator-cum-blower with a built-in cooling coil. Picture supply: www.tradekey.com
The trade of AC retro-fitters was very effectively organised and pretty skilled. Within the automotive, they’d match an AC evaporator-cum-blower with a built-in cooling coil. An AC condenser and compressor can be put in. There have been specialists who simply fabricated condenser brackets and engine pulleys relying on the make and mannequin of the automotive and the AC elements. The standard of the bracketing contributed quite a bit to the NVH and reliability. Becoming an AC additionally meant a rise in load on the engine and a considerable enhance in engine working temperature. The warmth inside the engine compartment additionally elevated. To take care of this, bigger radiators have been fitted. The engine fan blades have been changed with a much bigger one.
Fairly often to compensate for the bigger dimension and enhance in variety of blades, these fan blades have been moulded from plastic. Later auxiliary electrical followers grew to become obtainable and these have been additionally fitted in entrance of radiators to enhance the engine cooling. You additionally needed to set up an FICD (Quick Idling Carburetor System) that elevated the engine idling pace when the AC was switched on. This was completed to handle the rise in load on the engine and stop it from stalling. Because the engines have been low on energy, you additionally fitted a kick-down change to the AC system. So if you needed to overhaul and floored the accelerator, the kick-down change would momentarily disconnect the AC compressor which lowered load on the engine and made passing one other automobile simpler. In fact, in the event you needed to climb a steep hill or ghat, it meant you needed to maintain the AC off!
The Sanden SD 507 was one of the crucial well-liked AC compressors and it was greatest mixed with a Superking evaporator (consult with earlier picture)
You may think that again then if you bought a automotive, one of many first belongings you did was take if for retro-fitment of an AC. Nicely, nonetheless, a lot you needed to, you wanted to attend until the engine was run-in and had gone by means of its necessary first oil change. Some folks select to be extra cautious and wouldn’t match an AC till their automotive had coated a few thousand kilometres. Some retro-fitters have been extra identified than others, and the bracketing, hoses, connectors, and so on. of some producers have been most well-liked. If I’m not mistaken, the most well-liked AC compressor was the Sanden SD 507 and it was greatest mixed with a Superking evaporator.
In addition to the prevailing fan, an auxiliary electrical fan was fitted onto the radiator to enhance engine cooling
When Maruti began making and promoting vehicles in India in the direction of finish of 1983, the Maruti 800 (SS 80) got here fitted with solely a blower. Later in 1984, they launched an AC/TG mannequin which was mainly an 800 with an air conditioner and tinted glasses. With this, Maruti grew to become the primary Indian automotive producer to supply a automotive with a factory-fitted AC. As talked about earlier, now an air conditioner is a characteristic that’s taken as a right in a automotive. The instances, how they’ve modified.
Additionally from OVERDRIVE on ACs in Indian vehicles:
Hyundai i20 Lively’s AC is greatest amongst Indian hatchbacks!
Hyundai Creta’s AC scores highest amongst SUVs and MUVs in India
Final Indian vehicle AC take a look at: The testing parameters
Easy Tech: Air-con and ozone defined
Begins Rs 9.99 Lakhs
Begins Rs 6.8 Lakhs
Begins Rs 7.74 Lakhs