Toyota Prius/2004 to 2006 model
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Toyota Prius/2004 to 2006 model

THS inverter unit (from NHW11)

A battery module used on the Prius

The Prius 2004 mannequin yr was an entire redesign of the earlier generations of Prius. The brand new mannequin is predicated on the brand new (third technology) Hybrid Synergy Drive (HSD), changing the sooner Toyota Hybrid System (THS) know-how. The primary technology (1997 to 2003) couldn’t run its air-con except the motor was operating. In distinction, the 2004 mannequin launched an all-electric compressor for cooling. This allowed extra intensive use of the “stealth mode” (operation on electrical motor solely).

The drag coefficient of 0.26 was now the second-lowest within the business, after the smaller Honda Perception at 0.25.

Regenerative braking was vastly improved, relying so little upon the friction-type brakes (aside from panic stops) that some Toyota technicians quipped that the unique brake pads may effectively final for the lifetime of the automobile.

The 2004 Prius emerged as a midsize automobile with extra room than the earlier compact, redesigned as a “five-door” mannequin (4 doorways plus a rear hatch). Usually the automobile remained conveniently slim on the surface, somewhat flat sided, and comparatively tall (a number of inches taller than a Toyota Camry). The profile was way more steady, with a brief sloping nostril transitioning to a extremely sloped windshield and an arcing roofline ending in a cut-off Kammback. The extra top allowed a extra erect seating place and a better eye level, giving a greater view of the street to the motive force. There was additionally a shocking quantity of extra rear-seat leg room, resembling that out there in a a lot bigger automobile. Fold down rear seats with a 60/40 break up made for straightforward carriage of most parcels.

With a smaller and decrease voltage NiMH battery and an inverter to step the voltage as much as 500 V, the 2004 mannequin was extra highly effective (2 seconds sooner in Zero to 96 km/h acceleration) and is 15% extra gasoline effectivity|gasoline environment friendly than the earlier technology Prius, with 60 miles per US gallon (4.three L/100 km) metropolis and 50 miles per US gallon (4.7 L/100 km) freeway (in line with the EPA). When pushed appropriately, commuting and blended suburban drivers are reporting gasoline consumption of 45 to 50 miles per US gallon (5.2 to 4.7 L/100 km). See additionally
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The multi-function-display (MFD) reveals gasoline consumption bars for every 5 minute section of driving and this may encourage economical driving. The show additionally signifies instantaneous gasoline consumption, which is beneficial for detecting when the automobile has switched from electric-only to electrical + ICE. At the moment it could often be advantageous to speed up rapidly somewhat than lug the automobile, in an try to get to a extra favorable location or velocity vary for electric-only mode.

A Sensible Key System (SKS) possibility eliminates the normal ignition key. The “sensible key”, which resembles a standard keyless entry distant, has buttons to remotely lock and unlock the door, in addition to set off the alarm system. It isn’t needed to make use of any of the buttons to make the most of the SE/SS system. Approaching to inside one metre of the automobile whereas in-possession of the important thing (even inside a pocket or purse) causes the inside dome lights to fade in (if the switches are on the DOOR place). When the individual with the important thing of their possession touches both of the entrance doorways, or the rear hatchback door, that door is straight away unlocked and may be opened. There are three settings by which the Sensible Key System (SKS) can function with the default being – driver’s door touched, driver’s door unlock solely; entrance passenger or rear hatchback touched, all doorways unlock. As soon as inside, the automobile could also be began by pushing the “POWER” button with the fob nonetheless safely tucked away inside your pocket or purse). To cease the automobile, push the “POWER” button once more. As soon as parked, the automobile may be locked by a pushing a black button on the outside door deal with. The SKS system will detect keys left contained in the automobile when powered-off, and won’t permit the automobile to be locked on this scenario.

There isn’t a standard ignition change which must be turned to start out the Prius, that operate having been changed by a easy spherical “POWER” button on the dashboard. With the SKS fashions, the motive force solely wants to sit down down contained in the automobile (with the fob of their possession), press the brake with their foot and push the “POWER” button to start out the automobile. On automobiles which aren’t geared up with SKS, the motive force makes use of the lock/unlock buttons on the fob, and places the distant fob right into a slot within the sprint to permit the automobile to start out.

The automobile is classed as a SULEV (Tremendous Extremely Low Emissions Car), 90% cleaner than standard gasoline-only vehicles. It comes with an Superior Know-how Partial Zero Emission Car (AT-PZEV) certification by CARB (California Air Sources Board).

As an fascinating facet word, an possibility package deal provided in Japan and Europe provides the Prius the flexibility to carry out parallel and reverse parking assisted by the on-board laptop — the primary time such a functionality has been provided on a manufacturing automobile. Eighty p.c of the Prius patrons in Japan have chosen this feature. The system will not be clever although, significantly missing machine imaginative and prescient which might permit avoidance of obstructions or pedestrians, so it is rather restricted. [2]

When the automobile is turned-on with the “begin” button, it is able to drive instantly in “EV” (electrical automobile) mode, earlier than the interior combustion engine is began to heat-up the emissions management system (together with the catalytic converter). The delay between beginning the automobile and beginning the interior combustion engine is roughly seven seconds. The Asian and European variations of this automobile present a button labelled “EV” that maintains electrical automobile mode after startup, beneath most low-load driving situations. The North American mannequin doesn’t have the “EV” button, though the “EV” mode remains to be supported internally by the Prius high-voltage administration laptop. Whereas some have speculated that EV mode was not included on North American fashions within the curiosity of retaining the warranted battery lifetime of 100,000 miles (160,000 km) within the US – 150,000 miles (240,000 km) in California and several other different states, engineers word that EV mode is routinely overridden when the battery requires recharging from the interior combustion engine. The Prius is designed to guard the battery from excessive discharge in addition to over-charge and can make the most of the engine as-necessary to take care of the optimum situations for an extended battery life. Along with data at on-line dialogue teams, the PRIUS+ Mission affords directions for do-it-yourselfers who want to allow the button, and aftermarket elements supplier Coastal Digital Applied sciences affords a equipment.

Evolving from the button venture, The California Vehicles Initiative (CalCars) transformed a Prius in 2004, including bigger batteries, and personal corporations EDrive Programs in the US and Amberjac Tasks within the UK introduced plans to promote conversion kits in 2006. CalCars initiated efforts to advertise fleet purchases of plug-in hybrids to be constructed by automakers, and documented the emissions advantages of plug-in hybrids not solely on California’s clear energy grid but additionally on the nationwide (50% coal-fueled) energy grid.

Passengers of the Prius can use their Bluetooth-enabled cellphone by way of the automobile’s audio system with out taking the cellphone out of their pocket. It’s the first automobile launched with this function.


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