Drive aggregate for electric vehicles

Details Drive aggregate for electric vehicles Drive aggregate for electric vehicles

1976-12-03

1979-05-08

Mitchell, David M.

Motor vehicles

Power

Electric

74866, 318139, B60K 100

Patent

active

041531280

ABSTRACT:
A drive aggregate for electric vehicles, especially for trackless street vehicles, which is equipped with an electric shunt motor provided with field current control and with a change-speed transmission having at least two forward speeds connected behind the electric shunt motor; the electric shunt-wound motor thereby has a relatively high rated rotational speed in relation to its maximum rotational speed and a relatively reduced field-weakening range whereby the change-speed transmission is an automatic transmission connected with the electric shunt motor by way of a speed-reducing gear while the oil pump of the automatic transmission is driven by an electric motor coordinated thereto which operates at substantially constant rotational speed.

REFERENCES:
patent: 3216541 (1965-11-01), Steffen
patent: 3572167 (1971-03-01), Bosko et al.
patent: 3673890 (1972-07-01), Crooks
patent: 3861485 (1975-01-01), Busch
patent: 3905252 (1975-09-01), Zaiser
patent: 3915251 (1975-10-01), Kassekert et al.
patent: 3938409 (1976-02-01), Uozumi
patent: 3984742 (1976-10-01), Bader
patent: 4021712 (1977-05-01), Ishihara

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