41. The outdated engine also had little torque available at lower engine speeds , and was noisy. 42. Engine speed was increased but with little effect, except for a doubling of fuel consumption.43. At low engine speeds vanes are almost closed creating a narrow passage for the exhaust. 44. The engine speed was limited to 4, 000 rpm. 45. Maximum engine speed is listed at 7000 RPM. 46. Maximum torque was increased slightly, but more important, that torque became available at lower engine speeds . 47. Fuel injection is sequential and regulated with air mass per combustion and engine speed as parameters. 48. Variable valve timing assures that most of this power is available at very low engine speeds . 49. This is beneficial at higher engine speeds because of a reduction in the aforementioned valve float. 50. Many cars also have computers that keep track of engine speed , car speed and the like.
