ACtion Magazine - Napa Special Edition - June 2017 - 24
Hybrid and battery electric vehicle A/C
Air-cooling operation:
* The compressor compresses low-temperature,
low-pressure gas refrigerant into high-temperature,
high-pressure gas refrigerant.
* The high-temperature, high-pressure gas refrigerant passes through the internal condenser without
heat exchange (the air-mixing door blocks the flow
of air into the internal condenser) to the external
heat exchanger where the refrigerant is cooled by
the ambient air and condensed into a liquid.
* The liquified refrigerant expands across the aircooling expansion valve into a low-temperature,
low-pressure gas-liquid, two-phase mixture and
absorbs heat from the cabin air to cool the cabin
as it passes through the evaporator and then flows
back into the compressor.
The 2017 Prius Prime is a plug-in hybrid vehicle with
a heat pump climate control system capable of producing
heat without starting the engine at temperatures as low as
14°F. The system can operate in 6 different modes:
*
Cooler cycle mode
*
Serial dehumidification mode
*
Parallel dehumidification mode
*
Heater cycle mode
*
Gas injection heater cycle mode
*
Deice Cycle Mode
System components include:
*
Internal & External Condensers
*
Two electronic expansion valves
*
A cyclone separator valve
*
A gas injection electric compressor
*
Two magnetic flow control valves
*
Five temperature sensors
The system can help extend driving range by 20
to 30%, and while there are still issues to resolve,
according to Denso engineers, "Within the next 10
years, we expect our heat pump air conditioner to
become the world standard."
Prius Prime offers pollen filtration, heated front seats,
automatic climate control and a quiet electric compressor.
Toyota calls the system "smart-flow," because it focuses airflow only to areas where occupants are seated in order to help
maximize fuel economy and comfort. It can operate without
the engine running, utilizing a heat pump that allows the system to cool or heat the cabin while driving in EV mode. It
can function without the engine running in temperatures as
low as 14°F, where a conventional heat pump system could
only function above 32°F. There are five different ways to
control the A/C system: regular dashboard knobs, buttons and
switches, the touchscreen controls, the keyfob, a smartphone
app or controls on the heated steering wheel. That's a lot of
inputs. The remote climate control features allow the driver to
pre-cool or pre-heat the cabin before entering. ❆
24
ACTION/NAPA * Spring 2017
Table of Contents for the Digital Edition of ACtion Magazine - Napa Special Edition - June 2017
Tips from Gates
Water pump weeps
Regulating recharge
Change is coming for some HD vehicle refrigerants
The road not traveled: A/C for off-highway vehicles
Retrofi tting R-1234yf mobile air conditioning systems is prohibited
Hybrid and battery electric vehicle A/C
Is your recycled coolant at full strength
ACtion Magazine - Napa Special Edition - June 2017 - Cover1
ACtion Magazine - Napa Special Edition - June 2017 - Cover2
ACtion Magazine - Napa Special Edition - June 2017 - 3
ACtion Magazine - Napa Special Edition - June 2017 - Water pump weeps
ACtion Magazine - Napa Special Edition - June 2017 - Regulating recharge
ACtion Magazine - Napa Special Edition - June 2017 - Change is coming for some HD vehicle refrigerants
ACtion Magazine - Napa Special Edition - June 2017 - The road not traveled: A/C for off-highway vehicles
ACtion Magazine - Napa Special Edition - June 2017 - 8
ACtion Magazine - Napa Special Edition - June 2017 - 9
ACtion Magazine - Napa Special Edition - June 2017 - 10
ACtion Magazine - Napa Special Edition - June 2017 - 11
ACtion Magazine - Napa Special Edition - June 2017 - Retrofi tting R-1234yf mobile air conditioning systems is prohibited
ACtion Magazine - Napa Special Edition - June 2017 - 13
ACtion Magazine - Napa Special Edition - June 2017 - 14
ACtion Magazine - Napa Special Edition - June 2017 - 15
ACtion Magazine - Napa Special Edition - June 2017 - 16
ACtion Magazine - Napa Special Edition - June 2017 - 17
ACtion Magazine - Napa Special Edition - June 2017 - Hybrid and battery electric vehicle A/C
ACtion Magazine - Napa Special Edition - June 2017 - 19
ACtion Magazine - Napa Special Edition - June 2017 - 20
ACtion Magazine - Napa Special Edition - June 2017 - 21
ACtion Magazine - Napa Special Edition - June 2017 - 22
ACtion Magazine - Napa Special Edition - June 2017 - 23
ACtion Magazine - Napa Special Edition - June 2017 - 24
ACtion Magazine - Napa Special Edition - June 2017 - Is your recycled coolant at full strength
ACtion Magazine - Napa Special Edition - June 2017 - 26
ACtion Magazine - Napa Special Edition - June 2017 - Cover3
ACtion Magazine - Napa Special Edition - June 2017 - Cover4
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