camry 2007 engine
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The 2AZ-FE engine, standard across the Camry grade lineup (and now used in the Toyota Corolla), is based on the 2.4-liter four-cylinder engine from last year, but is substantially upgraded. This redesign employs optimized intake and exhaust systems, as well as strategies that reduce internal friction and enhance engine-block/crankcase rigidity. The result is improved power output with exceptional fuel economy and reduced noise and vibration levels.
This engine is based on bore/stroke dimensions of 3.48 x 3.78 inches (88.5 x 96mm) for a displacement of 2,362 cc, or 144.1 ci, and develops 158 SAE horsepower. During their revision of the existing engine, engineers boosted the compression ratio slightly to 9.8:1, altered the cam profile and paid particular attention to reducing friction through strategies such as reducing the tension of the piston rings while increasing their tensile strength. Finally, they reduced piston weight, optimized the balance shaft, improved sound insulation performance of the engine cover and improved the engine mounts. With this engine, Camry buyers have the choice of either five-speed manual or electronically operated five-speed automatic transmission.
For those looking for more power, the new 2GR-FE engine – a 24-valve, DOHC 3.5L V6 - is available in the LE, SE and XLE. This engine is designed to deliver up to 40 percent better acceleration over the 2006 model year Camry 3.3-liter V6. The V6 is based on bore/stroke measurements of 3.70 x 3.27 inches (94.0 x 83.0 mm) for a displacement of 210.9 ci, or 3,459cc, and uses a compression ratio of 10.8:1 to generate 268 SAE horsepower. The dual camshafts, which are chain-driven, employ Dual Variable Valve Timing with intelligence (Dual VVT-i) for optimal cam timing – and therefore maximum power production - at all RPM levels.
Engineers improved airflow through every element of the engine’s intake tract. This includes improving air-cleaner shapes, intake ducts and the intake manifold and cylinder head intake ports. In addition, valve openings were enlarged and exhaust pressure loss was reduced from the exhaust manifold to the muffler. Engineers modified the shape of the Camry’s taper-squish combustion chambers to make maximum use of that air. And they provided exhaust manifolds that incorporate catalytic converters for greater efficiency.
Harnessing this engine’s output is an all-new six-speed automatic transmission that uses 21 percent fewer parts than the conventional five-speed automatic transmission it replaces. This new transmission, which can be shifted sequentially, relies upon a newly developed gear train that uses a Ravigneaux-type compound planetary gear for reduced size, weight and friction.
This new transmission also uses a quick-response, low-friction clutch pack for enhanced fuel economy; an ultra-flat, low-inertia torque converter for high transmission efficiency; a set of high-response, low-slip clutch packs and new electronic and hydraulic control systems that incorporate an intelligent shift control that learns driver’s driving style and selects gears based on that style.
As a result of this development, transmission kickdown response was cut to 0.5 seconds, more than twice as fast as the response of the transmission this new one replaces.
Audio
The standard audio system in the 2007 Camry incorporates an AM/FM/six-disc in-dash CD changer with six speakers and uses a four-channel digital amplifier that produces 160 watts of output. Additionally, all audio systems are capable for reading CDs with MP3 files.
The premium JBL system, standard in the XLE and Hybrid, offers AM/FM/six-disc in-dash CD changer with eight speakers and an eight-channel, 440-watt digital amplifier for low distortion and faithful reproduction of a wide range of musical types and styles. When a navigation system is added, the premium JBL system integrates that system and comes with a four-disc in-dash CD changer. The JBL audio system includes Bluetooth® technology for hands-free telephone compatibility.
Toyota Camry safety
All 2007 Camrys come equipped with an Antilock Brake System (ABS), Electronic Brake-force Distribution (EBD), and Brake Assist; optional on some models is the Vehicle Stability Control (VSC) with traction control, which controls engine output and brake application on individual wheels to help control loss of traction in turns.
Dual-stage advanced SRS airbags are standard on all Camry models. Standard seat-mounted side airbags and side curtain airbags help provide coverage for the length of the passenger compartment. A driver’s knee airbag also is standard.
Camry Hybrid
Toyota extends its hybrid leadership by making its exclusive Hybrid Synergy Drive available in the 2007 Camry. Hybrid Synergy Drive consists of dual gas and electric power sources that are complementary and produce a combined 187 horsepower. This system varies power between gas and electric, or both, as needed.
The first half of this system consists of the 2.4L four-cylinder 2AZ-FXE Atkinson-cycle engine, which generates 147 hp and is coupled to a continuously variable transmission (CVT). The second half of the Hybrid Synergy Drive equation consists of a small, specially developed electric drive motor that produces 40 horsepower, an ultra-small inverter with a specially designed compact battery and a transaxle to provide the economy and seamless performance hybrid drivers seek.
In addition to its groundbreaking Hybrid Synergy Drive, Camry Hybrid comes with a long list of standard features. These include a tire-pressure monitoring system, halogen headlamps with automatic on/off, a premium JBL audio system with an auxiliary audio jack and Bluetooth® technology, cruise control, a tilt and telescopic steering wheel, dual-zone automatic climate control heating and air conditioning, an eight-way-adjustable power driver’s seat, a 60/40 split fold-down rear seat, 16-inch aluminum wheels, heated outside rear-view mirrors and much more.
Additionally, the Camry Hybrid is equipped with an “ECO” button that limits energy consumption by the HVAC system and under certain conditions can help improve fuel economy.
Because there are situations in daily driving in which the gas engine in a Toyota hybrid is completely shut down, air-conditioning and power-steering systems are driven electrically, rather than by the engine. This ensures these features will continue to operate, whatever the status of the Camry Hybrid’s drive system.
Finally, special attention was paid to the vehicle underbody with the use of wheel spats and underbelly pans resulting in a low coefficient of aerodynamic drag (Cd) of 0.27, which helps increase fuel economy.
Toyota warranty
The 2007 Camry and Camry Hybrid are covered by Toyota’s 36-month/36,000-mile basic new-vehicle warranty that applies to all components other than normal wear and maintenance items. Additional 60-month warranties cover the powertrain for 60,000 miles and corrosion perforation with no mileage limitation.
The Camry Hybrid also has an eight-year/100,000 mile warranty that covers the hybrid–related components, including the HV battery, battery control module, hybrid control module, and inverter with converter.
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