Improving batteries to permit them to be given an added charge when a hybrid is garaged, ordinarily at night, can substantially improve mileage, because it can permit hybrids to use battery power alone for the first 10-30 miles.
For every 10% ethanol added to the fuel, a mileage loss of 3% should be expected.
In D-4 direct injection, fuel and air is injected directly into the cylinder, instead of mixing it in the intake port which is how conventional fuel injection works.
How to save money by improving fuel economy and performance in any vehicle by up to 30% or more without expensive gadgets. Gas Mileage Bible is a must for anyone who drives a car. Simple scientific explanations on what causes losses and gains in fuel economy. Clear-cut gas-saving solutions, breaking down into straightforward categories: "no tech", "low tech", and "high tech".
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