Here's Why This Engine is About to Be Illegal to Own

[Music] what kind of engine does this car have gas or diesel you don't have to be a mechanic to understand which is which diesel cars make a sound similar to a tractor and its exhaust smells unpleasant though there are some people who like it especially if you're running it on old oil in which case it may smell like french fries the perception that diesel engines run slower and generate a lot of black smoke is long gone modern diesel engines have moderate fuel consumption and higher fuel efficiency also they have impressive torque at low speeds this is great for people who are tired of turbo lag the dynamics of the modern diesel vehicles are excellent but at the same time these engines demand higher quality fuel and repairing diesel engines can get very expensive a diesel engine doesn't differ too much from a gasoline engine in terms of overall layout but there are a few significant differences let's take a look the principal differences between these engine is how the fuel air mixture is formed ignited and burned a diesel internal combustion engine doesn't have spark plugs so the ignition of the air fuel mixture is caused by the compression of air in the cylinder unlike the gas engine air and fuel are supplied separately it should also be noted that practically no modern diesel engine is complete without turbo charging to improve the unit's performance a diesel engine like a gas engine has a crank rod mechanism but its compression ratio is significantly higher diesel engines are typically constructed with compression ratios in the range of 14 to 1 to 22 to 1. gasoline engines have a ratio between 8 to 1 and 12 to 1. how does a diesel engine work and how do you ignite the combustion chamber without any spark plugs first the air enters the cylinders the piston moves to compress the air 16 to 25 times this causes the air to heat up the temperature is critical in self-igniting the fuel the fuel is supplied to the combustion chamber under high pressure the compressed hot air reacts and ignites and the explosion forces the piston to move down which in turn causes the crankshaft to rotate then the process repeats this is how fuel in a diesel engine ignites without spark plugs it doesn't have a flame that travels by the pressure it all ignites at the same time that's one of the reasons they're more efficient and get better gas mileage there are plugs in the diesel engine but they're not spark plugs they are called glow plugs what do they do glow plugs heat the air inside the combustion chamber imagine the hot wires you see in your toaster they look similar to that their metal are ceramic coils installed in a swirl chamber when you turn on the ignition the gold plugs heat up very quickly to 900 degrees fahrenheit and heat the air inside the combustion chamber when the fuel gets injected and then combustion process begins diesel engines got their name from their inventor rudolph diesel a german engineer who was born in paris according to one legend rudolph diesel found inspiration in a cigar lighter he placed the wick in a glass tube which heated up slowly as the disc moved and started compressing the air trapped inside the inventor soon understood that he compressed the air and added fuel that would result in ignition at the time of his invention nobody was producing special fuel for the first diesel engines rudolph became interested in using coal dust the idea sounded good because rudolph had a german patent and there was plenty of coal in germany but coal dust didn't work because of the high abrasives and there was a bigger problem with the dust going into the cylinders rudolph switched to oil instead and caused the pistons to be driven by a flywheel the new configuration reached 20 horsepower and the efficiency factor was about 30 percent at the time the results were acceptable because there were no other motors like this available it was said that the diesel engine could run continuously for more than half a month at the beginning of the 1900s licenses to produce diesel engines were being sold to manufacturers of ships power plants and water pumps total contracts ended up in the millions of dollars people were realizing diesel engines were four times more economical they started becoming widely used in transportation and thus began the demise of the age of stokers who shoveled coal this time period saw a lot of experiments around compact motors for cars but numerous tests led to failure it wasn't until 1924 the first diesel-powered truck was made in germany history of production of diesel cars began in 1933 with citroen's rosalie shortly after in 1936 the world saw the mercedes-benz 260d it had a 2-liter engine produced 45 horsepower and came with a price tag of 6 800 right marks which in today's dollars would be more than 95 000 bucks in 1939 a diesel hanomag record was introduced it had an aerodynamic body and reached a maximum speed of 95 miles an hour which is pretty quick back in 1939 70 years later the germans were still experimenting with diesel engines and getting good results in 2006 the audi r10 tdi became the first diesel car to win the 24-hour le mans race the race car was equipped with a 5.5 liter v12 diesel engine with twin turbos it had an output of 650 horsepower and 1100 newton meters of torque there are two types of diesel engines indirect injection and direct injection diesel inputs the names can be misleading because the difference between the two isn't how fuel is injected but where it's injected the two engines have different combustion chamber designs indirect injection or idi was more common in the 80s and early 90s but it's been replaced by the more efficient direct injection the idi system has a pre-chamber also called swirl chamber above the cylinder this is where fuel gets injected and rapidly mixes with air auto ignition starts there fuel enters the combustion chamber rapidly if mixing the fuel with air in the cylinder and atomization is achieved the gold plug is also located in the pre-chamber and the shape of the pistons in an idi tend to resemble those of a gasoline engine the id has a high rate of swirl over a wide range of speeds doesn't require as much pressure and has less of a chance of blockage due to self-cleaning pintle injectors the idi however has higher fuel consumption due to lower thermal efficiency and a higher compression ratio required to start the engine the other type of diesel engine is the direct injection or di di diesel engines inject fuel directly into the combustion chamber right on top of the piston di engines operate at higher injection pressures so these engines don't need a pre-chamber to ensure proper diffusion of fuel and air direct injection diesel engines operate at a much higher level of efficiency with significantly lower emissions and greater performance they're also cheaper to build that's why most modern automotive diesel engines designs are based on the direct injection system so which should you choose diesel or gasoline cars that run on gas are more dynamic they're typically cheaper than diesel cars because gas engines are simpler and cheaper to build compared to diesel engines gasoline engines aren't as noisy and they don't face problems with fuel ignition during winter that you can have with diesel cars if you were to compare gasoline versus diesel cars diesel cars can achieve maximum torque at the first few seconds of ignition diesel provides more torque than gasoline does this allows for better acceleration it's not difficult for a diesel car to get going after idling or from low rpm but gas cars can stall by comparison diesel cars don't have turbo lag which is useful when you need that power boost to pass the car in the road quickly now remember that torque and power are related they can't have one without each other they go hand in hand the higher the torque the higher the power of the engine but torque comes into play only where there is resistance for example the torque of a tractor that's driven slowly along a road is constantly minimal but its torque reaches maximum when the tractor tries to overcome an obstacle that's when torque comes into play to boost power it's the same idea for gasoline engines when the road is smooth gasoline and diesel cars run approximately the same while going uphill or overcoming an obstacle diesel engine's torque can increase to its max so the diesel car is able to push ahead with strength but what about the gasoline car when the gas car reaches a higher speed naturally it can also overcome the obstacle but not as fast so the difference is that diesel engine gets more power quicker than a regular gasoline engine can another thing to consider is that diesel engines require you to change oil more often tests show that diesel cars are very reliable many of the engine parts must be made strong and durable to hinder high compression and this in turn makes diesel engines heavier in weight and higher in cost but over a long period of time both cars can end up costing roughly the same in similar driving conditions winter time can be a challenge for diesels when overnight temperatures begin to dip down near 30 degrees fahrenheit time to blend in winter diesel with additives for winter otherwise if you're sticking with summer diesel they'll start getting cloudy thicken up and then gel in your gas tank it's like trying to pump jello through your injectors when that happens for gas engines you don't have that problem so that's a relief so there are various advantages and disadvantages for both types of engines any engine from a good car manufacturer or brand will serve you a long time in general so when choosing an engine you want to consider your driving needs and patterns if your trips are usually in the city or suburbs gasoline engines are the best way to go on the other hand if you're regularly driving long distances or driving up steep hills or elevations or carrying heavy loads then the diesel engine is the better bet diesels are powerful for heavy loads they're strong for driving on highways and long distance drivings even at high speeds diesels have lower rpm and transmission gears shift less frequently because of that if you need to do long distances on the highway the diesels are a more efficient choice gas engine can accelerate faster from zero to sixty but a diesel can perform better when you're trying to pass another car and also it can handle heavier loads than a gasoline car if you need to tow a boat or a trailer then definitely go for a diesel if you're doing long drives if you want a fast sports car to drive on the weekends then a gasoline car is fine anything between those scenarios you have room to choose whichever engine you prefer that said with more scrutiny on emissions control something that will change the debate about diesel versus gasoline is the new era of hybrids and electric cars so let's wait and see what the future has in store and if you want a little glimpse into the future about diesels they're starting to have plans to ban them in europe but you can't even buy them after a certain year so it may be that the diesel engines for normal driving may be fading away slowly but surely if you enjoyed this episode please share the video thank you

Channel: Scotty Kilmer

Views: 641,919

Rating: 4.7023883 out of 5

Keywords: diesel, gasoline, diesel vs gasoline, engine, engines

Id: Zvt7ZYtZxNI

Length: 11min 11sec (671 seconds)

Published: Fri Jan 15 2021