G - Physics – 05 – D
Patent
G - Physics
05
D
G05D 23/19 (2006.01) F02D 29/04 (2006.01)
Patent
CA 2122557
THERMOSTAT FOR A GAS ENGINE HEAT PUMP AND METHOD FOR PROVIDING FOR ENGINE IDLE PRIOR TO FULL SPEED OR SHUTDOWN ABSTRACT A thermostat which provides a pulse width modulated signal to a gas engine heat pump controller. The thermostat varies the width of the pulse width modulated signal to indicate the load required to heat or cool the room. The thermostat provides an initial idle time for the gas engine heat pump. The thermostat further steps the gas engine heat pump down from high speed operation and idles the engine prior to shutting the engine off.
Strand Rolf L.
Uhrich Daniel T.
Honeywell Inc.
Smart & Biggar
LandOfFree
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