High mileage stories
westranch
18 years ago
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cheerful1_gw
18 years agolast modified: 9 years agoearthworm
18 years agolast modified: 9 years agoRelated Discussions
Coasting improve gas mileage?
Comments (8)"Depends" Jerry. Decel fuel cut-off is a very common strategy that even existed in carbureted cars (First one I can think of was Ford Escort 1980). When all we had were carbs, decel caused an extremely rich air/fuel ratio and wasted a lot of fuel while simply releasing most of it to the atmosphere right through the engines tailpipe. So they added fuel cut solenoids to shut the idle circuit down during deceleration. Once we had fuel injection interrupting the injector circuit operation was easy to reduce decel fuel waste, and that is standard across the board with every manufacturer. It's use allows for better catalytic convertor operation as well. Very rich fuel ratios deplete the catalyst of stored O2 and in effect turn them off. Combine that with an additional clutch in the transmission that allows for reduced, if not eliminated engine braking when in overdrive and the engineers are attempting to out gain the benefits of even coasting in neutral and not from just a fuel mileage consideration, but an emissions consideration as well. Today's hybrid vehicles are noted for not having any engine braking at all on certain models. In fact once they go into regenerative braking, and if the battery is sufficiently charged they will rely totally on the mechanical brakes to slow the car down unless "B mode" is used. "B mode" is known as mountain braking and uses the electric motors to fight each other to produce the effect of engine braking. You have to study engine control dynamics to see exactly what compression numbers occur during different engine operating conditions, but as far as the argument that you are burning fuel during a strong decel, "There isn't enough compression to properly burn any fuel that gets into the cylinders" once the manifold vacuum reaches a high enough value. So most of the fuel getting to the cylinders simply gets pumped to the exhaust, which quite often would resulted in a pretty loud backfire. Use the lack of such an occurrance, that cars don't back fire out the exhaust like they used to as part of the proof....See Moreinline fuel pump
Comments (1)I ran a 1992 Jeep Cherokee, 6 cy HO to 193,000 miles using the original fuel pump. Still running when I turned it in. I now have a 1998 Jeep with 103,000 miles and original fuel pump - no problem with that. Did loose one circuit in the front lighting. Problem ahd been isolated to the wirng harness between the lamp housing and a splice. I have a 1998 Dodge Stratus with 105,000 miles - original fuel pump. Wife has a 1997 Saturn, 135,000 miles - original fuel pump. I had a 1978 Olds Cutlass - fuel pump went out at 67,000 miles. My son had a 2004 Dodge Stratus. Fuel pump quit at 60,000 miles. Much of the time, the fuel pumps in my family's stable do last a long time, and then we get an occassional early failure. I'd agree that your mechanic's statement is on the mark....See MoreLower Gas Mileage Cars
Comments (9)My good old 1983 Toyota Tercel 4WD station wagon got 43 miles to the gallon the day we drove it off the lot! That was freeway miles, and aroun 28 to 30 in town. It's still running strong some where in Idaho... I had it for 19 years, and it was still getting 32 mpg from it's tired old engines. All these new engines are too heavy.... should be able to get that mileage, but with all the stuff they have to put on the engines anymore.... in Europe they have big cars that get over 30... with diesel. Too bad we won't see that here either... one of my accounts is a volkswagon dealer... the bugs ESTIMATED mpg is 20/28. In my 2000 Taurus, my ACTUAL is 23,24/28.5. ....See Morehigh chill fruit varieties in low chill regions - success stories
Comments (5)Climate zone 10 (probably on the border between 10a/10b), less than 150 hours of chill. Blenheim Apricot produced 11 fruits, though only about 5 of them fully developed. The tree had been planted in the ground only 2 years before that, so I'd say that's pretty good. Rainier cherry in partial shade seems to have no problem blossoming, Bing cherry tree appears to be able to grow just fine, and there were maybe 10 blossoms on it last year. Still too young for fruit though, I'll have to let you know. Two months ago I grafted a small branch of Royal Minnie on it, so there is a possibility that might help induce the tree to be able to fruit, wake it up faster from its dormancy. The graft took and that branch is now bursting full of blossoms and leafing. The lack of chill isn't a total curse here, it is possible to grow most types of tropical fruits (growing a banana and lychee tree, and there's someone not that far from here with a huge starfruit tree in their backyard). It's the type of place people are more likely to have an orange tree or avocado, but almost never an apple or plum tree. There are a few people around here who've planted a low-chill Babcock peach, but I've never seen much fruit in these trees. A long time ago in the 40s, there used to be commercial orchards of Blenheim apricots around here. But I think the region gets a lot less winter chill than it used to due to all the development that has happened and asphalt paved surfaces....See Morepanzees36
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