2020-02-29 at 2:42 PM UTC
totse2118
Space Nigga
[my ci light-haired pongee]
If cars just shut down instead of idle the planet would last a lot longer.
There is no need to be in such a rush
2020-02-29 at 2:44 PM UTC
aldra
JIDF Controlled Opposition
pretty sure it takes more petrol to start an engine after it's been stopped than it does to idle for 30 seconds waiting for a light
2020-02-29 at 2:58 PM UTC
The new Volkswagens/Skodas/SEATs have a cut-off at idle mode you can elect to use. It does save diesel, especially in the summer in city driving, but it's going to wear out your starter motor, and the labour to replace those things is substantial.
If you are stopped for a while it is usually recommended you turn off the engine to save fuel anyway.
But just buy a hybrid if you're that interested in saving the planet. They generally use their own generator to start the engine, so don't wear out with continuous stop-start cycles.
2020-02-29 at 3:17 PM UTC
Wouldn't that destroy the engine and spark plugs
2020-02-29 at 11:29 PM UTC
We can't kill the planet so there is that. Yes I know, we can kill all life on the planet but earth will be just fine. Chernobyl.
2020-02-29 at 11:32 PM UTC
The corona virus caused reduced pollution in China. Which way should we go?
2020-03-01 at 12:39 AM UTC
believe it or not the engineers thought of these things.
2020-03-01 at 12:49 AM UTC
-SpectraL
coward
[the spuriously bluish-lilac bushman]
Many people think that long-term use may induce additional wear due to lack of oil lubrication. For the crankshaft bearing half shells and the big end bearings this can translate into frequent high-speed rotary movement before a hydrodynamic film is established. During this phase of boundary lubrication, metal-to-metal contact can occur between the crankshaft surface and the bearing's sliding surface. This was not an issue while the number of engine restarts totaled what was generally understood to be a normal magnitude. However, in a vehicle with a start-stop system this effect can necessitate new technological solutions to avoid premature bearing wear, depending on the driving cycle. Consequently, future engines for start-stop applications need to be designed for 250,000 to 300,000 starts. Traditional bearing shells with aluminum or copper lining show severe wear after only 100,000 cycles.
Some implementations don't use a starter motor[citation needed], eliminating concerns of starter motor wear. The Mazda i-stop used in the Mazda3/Axela line (in Europe and JDM) uses combustion to assist the starter motor by sensing the position of the piston in the cylinder. They claim quieter and quicker engine restart within 0.35 seconds.[44]
Start-stop systems are heavily reliant on the battery. Testing indicates that AGM batteries diminish in their ability to support start-stop functionality over time.[45] While alternatives exist (NiZn, Lithium-Ion, supercapacitors,[46] PbC), virtually all automakers continue to use conventional AGM lead acid batteries.
Some car makers such as Suzuki have one lithium-ion battery inside the car.[37]
2020-03-01 at 1:17 AM UTC
you wouldn't have information about the whole logic of the system unless you worked on them 10 hours a day and sometimes got a chance to talk to field engineers and manufacturer class leads at their regional buildings. everything is on a need to know basis. even tech support can't answer questions like 'what is the nominal resistance across this shift lock release solenoid'.
2020-03-01 at 2:41 AM UTC
but, i do this for a living and have for a long time. it's just not like you actually think it is. what i gave you as an example actually happened today. there is nothing in tech info or the ETM's about what resistance you should read across a good shift lock release solenoid. i called the national tech support center and they also did not have that information. most likely nobody except the manufacturer of that component and the engineering department has that information. and unless a campaign or TSB is issued regarding that part, and that campaign or TSB instructs the technician to test the component before replacing (a generous .3 to rip apart the center console and use your dvom on a connector, a whopping .5 if it needs to be replaced), that information will simply not get out. if someone tests a known good and posts it on the internet, it won't be commonly known. the manufacturer will not make a statement regarding it. not even an aftermarket group will, after they test a known good for making their cheap replacement to sell to NAPA and o'reillies.
you are basing your theories on pure speculation about how you think things 'should' be. what i'm telling you is how it is in the real world.
