1, the car jumps over excessive consumption of fuel and oil again more
From item oil the viewpoint looks, the car is self-prossessed concern into direct ratio with oily bad news, namely the car with greater weight jumps over bad news oil, use economy is opposite poorer. Small-sized car is self-prossessed every increase 40 kilograms to want fuel of much waste time 1% . But the good point with have the stability below take a sudden turn and state of slam the brakes on better from great car, produce “ hair not easily to wave the phenomenon of ” .
2, the advantages and disadvantages of different drive means
According to dynamical transmission way, the car can be divided for ” of “ four-wheel drive, ” of drive of the buy before “ engine, rear, ” of drive of the buy before “ engine, front axle, ” of drive of “ engine postposition, rear 4 kinds: Four-wheel drive means basically is used on a few cross-country cars, the rear wheel before the advantage makes has driving force, traction is big, pass a gender strong, add a muscularity, stability is good, the armor plate of automobile body and transmission system compares a car thick, safety factor is high, comfortable at cross-country. But defect is weight big, the section is oily poor. Means of drive of the buy before engine, rear basically is used on a few medium, limousine car, the advantage is around bridge the negative charge that bear the weight of is basic and same, dynamical sex is strong, traction is big, when climbing the travel on slope, muddy road and bumpy road, dynamical sex, prevent rear wheel sideslip and stability the car of ” of the drive before the buy before “ of apparent be superior to. But its defect is transmission shaft is retreated to rear, cause a floor board raised, a few assembly are decorated apart, occupy a space bigger, make very hard car miniaturization. Means of drive of the buy before engine, front axle basically is used in medium or small on the car, the advantage was to save transmission shaft, floor evenness, transmission fastens collect, weight is reduced, the floor is reduced, core drops. But its defect is uphill when weight moves backward, front axle bear is reduced, cannot produce enough traction, because front axle weight is insufficient,go up in more slippery road surface and cannot produce enough traction; Declivous when front axle bear is overweight, can accentuate further in bear of the front axle when declivous brake especially. This kind of model is unfavorable in fluctuation slope more a mountainous area use. Means of drive of engine postposition, rear basically is used on miniature car, the advantage was to save transmission shaft, add a muscularity, traction is big also, wheelbase is lesser, there is vent-pipe below the floor, engine waste gas, noise won't pollute railroad car inside. But its defect is rear bear big, turn easy sideslip, control system is too senior, the structure is complex, cooling system is complex, boot is too small.
Previous12 Next
Hot Tags:
