Engine starter apparatus

Details Engine starter apparatus Engine starter apparatus

1990-03-07

1990-11-20

Braun, Leslie A.

Machine element or mechanism

Engine starters

Automatic

74 6, 290 48, F02N 1100

Patent

active

049709089

ABSTRACT:
An engine starter apparatus being arranged such that a rotational force from an electric motor is transmitted to an output rotary shaft through a planetary speed reduction gear. The number Zs of teeth of a sun gear, the number Zp of teeth of a planet gear, the number Zi of teeth of an internal gear and the number N of the planet gears satisfy the equation (Zs+Zi)N=an integer, and the pressure angle .alpha.bi of the engagement between the planet gear and the internal gear is arranged to be cos.sup.-1 {(Zi-Zp)/(Zs+Zp).times.cos.alpha.bs}, where .alpha.bs is the pressure angle of the engagement between the sun gear and the planet gear.

REFERENCES:
patent: 4776224 (1988-10-01), Maezawa et al.
patent: 4800766 (1989-01-01), Isozumi et al.

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