September 3, 20197 yr How will they leave it ticking over for hours, alongside the Toyota or Landrover pickup, that is ticking over too. Why do farmers only turn the engines off once they are parked back in the shed.
September 3, 20197 yr Author 38 minutes ago, SteamyTea said: How will they leave it ticking over for hours, alongside the Toyota or Landrover pickup, that is ticking over too. Why do farmers only turn the engines off once they are parked back in the shed. Red diesil's cheap
September 3, 20197 yr 55 minutes ago, SteamyTea said: Why do farmers only turn the engines off once they are parked back in the shed. In our case it was because, more often than not, the tractor battery was so knackered that once you'd started it in the morning you didn't dare turn it off, because it wouldn't have been able to restart...
September 3, 20197 yr I can believe both of them. It annoys the hell out of me when I see delivery drivers doing it. And Taxi drivers. School run Mums and Dads. Ambulences Neighbour's friends Road Crews. Such an easy thing to do, but very few bother. I turn my engine off when I am at a red light.
September 3, 20197 yr 2 minutes ago, SteamyTea said: I can believe both of them. It annoys the hell out of me when I see delivery drivers doing it. And Taxi drivers. School run Mums and Dads. Ambulences Neighbour's friends Road Crews. Such an easy thing to do, but very few bother. I turn my engine off when I am at a red light. Have to leave mine running as it crashes the Bluetooth streaming for a couple of minutes of I turn it off ??
September 3, 20197 yr Someone needs to tell yer man that he needs to skim the topsoil off first - offload to the right - and then subsoil - offload to the left . That way you can re-fill the trench and replace the original topsoil. Not have to buy some in. Easy peasy. I dunno - amateurs.?
September 3, 20197 yr 5 hours ago, SteamyTea said: [...] I turn my engine off when I am at a red light. Last century, in Berlin, (1984) I'd regularly get shouted at by pedestrians passing my car while I was waiting in a traffic queue "Motor Aus! " (Switch Off!) And I'd reply just as tartly - Quatsch! Maul halten! (Rubbish! Shut yer face) Takes more fuel and causes more emissions, more wear, knackers the battery (I was told by my boss way back then) to restart the car than allow it to tick over quietly. Is it any different now?
September 3, 20197 yr It is a lot different, just as it was back then. Did I mention old Landover's being driven at 15 MPH while belching out smoke, just to obscure the late indication that they were turning.
September 3, 20197 yr 56 minutes ago, AnonymousBosch said: Takes more fuel and causes more emissions, more wear, knackers the battery (I was told by my boss way back then) to restart the car than allow it to tick over quietly. Quite a few years ago a US student did a little project on this, measuring the injector operation on a Japanese car idling and stopping and starting. There were a few assumptions (e.g., that the same amount of fuel was used on each injection) but the conclusion was that overall there was a fuel saving for stopping the engine for more than 0.7 seconds. That included the extra fuel needed to recharge the battery after the following start but, of course, couldn't say anything about the wear to the mechanical bits or the battery. 6 hours ago, SteamyTea said: Ambulences AIUI, ambulances have enough electrics running that stopping the engine for long might be a bad idea. It'd be awfully embarrassing not to be able to start again because the defibrillator, or whatever, has drained the battery.
September 3, 20197 yr 4 hours ago, Ed Davies said: It'd be awfully embarrassing not to be able to start again because the defibrillator, or whatever, has drained the battery. That can be dealt with in other ways, maybe a simple autostart after a set period of time. Ambulances are now often dotted around the major roads, rather than at a station. One major parking place for them down here is at Chiverton Cross. The locals get fed up with them ticking over, though they do understand the reasons why. There has to be better ways. 4 hours ago, Ed Davies said: couldn't say anything about the wear to the mechanical bits or the battery. VW did some research about this before introducing their stop/start system. They found no appreciable difference in longevity.
September 3, 20197 yr Just now, SteamyTea said: VW did some research about this before introducing their stop/start system. They found no appreciable difference in longevity. From 2005 until last year I've owned various Toyota hybrids. They were all really reliable, despite them stopping and starting the engine many, many times during every journey. They had the engine stop/start thing so refined that there was no way to tell inside the car when the engine stopped or started, other than by looking at the central display. They'd cracked the smooth starting problem by having the car start on one cylinder at a time, with the exhaust valves held open on the cylinders that weren't firing. They also did away with the starter motor, and started the engine using a direct drive electric motor on the crankshaft, that doubled up as a generator, so was permanently coupled to the engine all the time.
September 3, 20197 yr I once drove my old Chrysler Alpine about a mile and a half on the starter motor. Just got it rolling, jammed it into second gear and turned the key. Got me home. And no, I had not run out of petrol, was the ignition coil.
September 5, 20197 yr On 03/09/2019 at 22:04, SteamyTea said: I once drove my old Chrysler Alpine about a mile and a half on the starter motor. Just got it rolling, jammed it into second gear and turned the key. Got me home. And no, I had not run out of petrol, was the ignition coil. And another thing, how many drivers use their handbrake when stopped at traffic lights? 5%? theyre not going to switch off their engine if they’re not even in the habit of that.
September 5, 20197 yr 8 minutes ago, daiking said: And another thing, how many drivers use their handbrake when stopped at traffic lights? 5% I am in split minds about that. I am not sure of the figures now, as it is 40 years since I studies automotive engineering, but back then, a secondary brake (hand brake) had to be capable of applying 14% of the vehicles rated braking force (that depends on age and mass of vehicle). Applying all 4 brakes via the foot peddle, supplies up to 100%. There is also the matter of brake cooling. Depending on the type and style of driving, applying a brake onto a drum or disk can cause either overheating or reduced cooling. Not so much of a problem these days as brakes are very good (mine have done about 100,000 miles without any maintenance/replacement), but other drivers may not drive like my Mother and overuse brakes. Edited September 5, 20197 yr by SteamyTea
September 5, 20197 yr Lol, all those intelligent drivers thinking about brake component expansion and contraction. They don’t even park in gear ?
September 5, 20197 yr 5 minutes ago, daiking said: They don’t even park in gear I do (I drive an auto and never use the “parking brake”), p.s. with mine you can’t take the key out unless your in “park” ?
September 5, 20197 yr 5 minutes ago, joe90 said: I do (I drive an auto and never use the “parking brake”), p.s. with mine you can’t take the key out unless your in “park” ? You don’t count, you’re as old as the hills.
September 5, 20197 yr 1 minute ago, daiking said: You don’t count, you’re as old as the hills. Yup, and retired, finished my build and living the dream (pottering with vintage tractors ?) ?
September 6, 20197 yr On 03/09/2019 at 21:54, SteamyTea said: [...] VW did some research about this before introducing their stop/start system. They found no appreciable difference in longevity. But what about fuel consumption? Does it really save fuel? I bumped into this the other day - pretty light on hard evidence - but claims expert status. Is there any properly constituted research we can read?
September 6, 20197 yr I believe one of the motivations for introducing stop-start systems wasn't fuel saving, but a reduction in air pollution. The test cycle for emissions included time spent stationary, as this is considered to be a significant cause of urban air pollution, and the manufacturers realised that having the engine turn off during the idle periods of the ECE test cycle reduced their overall emissions. The fuel saving argument was put forward to sell the stop-start feature to consumers. Whether fuel is really saved will depend very heavily on the pattern of use, but there are definitely some cases where there is a significant fuel saving, like hybrids, where the ICE can remain off for long periods when driving on congested urban roads. The EU emission test cycles are: Characteristics Unit ECE 15 EUDC NEDC† Distance km 0.9941 6.9549 10.9314 Total time s 195 400 1180 Idle (standing) time s 57 39 267 Average speed (incl. stops) km/h 18.35 62.59 33.35 Average driving speed (excl. stops) km/h 25.93 69.36 43.10 Maximum speed km/h 50 120 120 Average acceleration1 m/s2 0.599 0.354 0.506 Maximum acceleration1 m/s2 1.042 0.833 1.042 † Four repetitions of ECE 15 followed by one EUDC1 Calculated using central difference method
September 6, 20197 yr 5 hours ago, JSHarris said: I believe one of the motivations for introducing stop-start systems wasn't fuel saving, but a reduction in air pollution. The test cycle for emissions included time spent stationary, as this is considered to be a significant cause of urban air pollution, and the manufacturers realised that having the engine turn off during the idle periods of the ECE test cycle reduced their overall emissions. The fuel saving argument was put forward to sell the stop-start feature to consumers. Whether fuel is really saved will depend very heavily on the pattern of use, but there are definitely some cases where there is a significant fuel saving, like hybrids, where the ICE can remain off for long periods when driving on congested urban roads. That is the sort of thing that annoys me. It is a bit like the smart meter deception. I would much rather the car manufacturers said the stop start feature is to reduce air pollution than tell lies.
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